I.O.I's Stages with Evolving Vocal Arrangements
Collection Music 2026.09.07

I.O.I's Stages with Evolving Vocal Arrangements

10 official videos showcasing part delivery, harmonies, and unit versus full group vocal arrangements

I.O.I's vocal arrangements haven't been fixed to just one formula. In the 2016 full group stage with 11 members, the short parts flow quickly, while in the 'Whatta Man' unit stage featuring 7 members, the time each vocal color stays is prolonged. The 2026 reunion stage with 9 members, minus Mina and Zhou Jieqiong, maintains the familiar team colors while offering a changed vocal quality and breathing.

This list compiles ten official videos that blend full stages, fan cams, and choreography videos, making it easy to compare part delivery and harmonies. Instead of just chasing the main vocal's high notes, it’s good to catch the first vocal colors in the intro, the moment transitioning from rap to vocal, and the overlaps in the chorus. The number of members on-screen and the actual participating lineup are also differentiated in the descriptions for each item.
I.O.I - Dream Girls Complete Fancam

I.O.I - Dream Girls Complete Fancam

I.O.I - Dream Girls Full Fan Cam

This section explores the ‘I.O.I - Dream Girls Full Fan Cam’ from the piece 'I.O.I's Stages with Evolving Vocal Arrangements.' The key description is 'M2's release of ‘[MPD Fan Cam] I.O.I Fan Cam Dream Girls I.O.I Fancam @M Countdown_160505’ allows us to check the composition and on-site experience of the Dream Girls full fan cam in this list,' and the observation criteria is 'the changed part delivery and harmonies across the 2016 full, 7-member unit, and 2026 9-member stages.' The original of 'I.O.I - Dream Girls Full Fan Cam' that connects to 'I.O.I's Stages with Evolving Vocal Arrangements' is released by the M2 channel, with the registered title being ‘[MPD Fan Cam] I.O.I Fan Cam Dream Girls I.O.I Fancam @M Countdown_160505.’

It’s good to start by seeking what elements are most quickly heard or seen during the first listen or view of the current item from 'I.O.I's Stages with Evolving Vocal Arrangements.' Then, for the second round, choose one element that creates that impression, whether it’s a voice, movement, or arrangement. Make sure to also note how the first and last impressions of ‘I.O.I - Dream Girls Full Fan Cam’ differ from each other.

This leads us from 'I.O.I - Dream Girls Full Fan Cam' to the next ‘I.O.I - Whatta Man Full Fan Cam.’ By facing off the intro and key impressions of the two items, we can understand what change this list begins from. Open the official link of ‘I.O.I - Dream Girls Full Fan Cam’ from 'I.O.I's Stages with Evolving Vocal Arrangements' to recheck the title and source, and leave a sentence about anything in the description and your judgment that differed. This comparison shows precisely why the current item is placed in this order.
형식 공식 무대·직캠·안무 영상 채널 M2 공식 영상 제목 [MPD직캠] 아이오아이 직캠 Dream Girls I.O.I Fancam @엠카운트다운_160505
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I.O.I - Whatta Man Complete Fancam

I.O.I - Whatta Man Complete Fancam

I.O.I - Whatta Man Full Fan Cam

This section explores the ‘I.O.I - Whatta Man Full Fan Cam’ from the piece 'I.O.I's Stages with Evolving Vocal Arrangements.' The key description is 'M2's release of ‘[MPD Fan Cam] I.O.I Fan Cam 'Whatta Man' (I.O.I FanCam) | MCOUNTDOWN_2016.8.11’ allows us to check the composition and on-site experience of the Whatta Man full fan cam in this list,' and the observation criteria is 'the changed part delivery and harmonies across the 2016 full, 7-member unit, and 2026 9-member stages.' The original of 'I.O.I - Whatta Man Full Fan Cam' that connects to 'I.O.I's Stages with Evolving Vocal Arrangements' is released by the M2 channel, with the registered title being ‘[MPD Fan Cam] I.O.I Fan Cam 'Whatta Man' (I.O.I FanCam) | MCOUNTDOWN_2016.8.11.’

It’s good to start by seeking what elements are most quickly heard or seen during the first listen or view of the current item from 'I.O.I's Stages with Evolving Vocal Arrangements.' Then, for the second round, choose one element that creates that impression, whether it’s a voice, movement, or arrangement. Make sure to also note how the first and last impressions of ‘I.O.I - Whatta Man Full Fan Cam’ differ from each other.

This item lies between the earlier ‘I.O.I - Dream Girls Full Fan Cam’ and the latter ‘I.O.I - Very Very Very 4K Fan Cam.’ Comparing the speed and emotions of these three items, along with their visuals or package compositions, makes it easier to determine if the current item is a connecting point or a turning point. Open the official link of ‘I.O.I - Whatta Man Full Fan Cam’ from 'I.O.I's Stages with Evolving Vocal Arrangements' to recheck the title and source, and leave a sentence about anything in the description and your judgment that differed. This comparison shows precisely why the current item is placed in this order.
형식 공식 무대·직캠·안무 영상 채널 M2 공식 영상 제목 [MPD직캠] 아이오아이 직캠 'Whatta Man' (I.O.I FanCam) | MCOUNTDOWN_2016.8.11
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I.O.I - Very Very Very 4K Fancam

I.O.I - Very Very Very 4K Fancam

I.O.I - Very Very Very 4K Fan Cam

This section explores the ‘I.O.I - Very Very Very 4K Fan Cam’ from the piece 'I.O.I's Stages with Evolving Vocal Arrangements.' The key description is 'M2's release of ‘[MPD Fan Cam] I.O.I Fan Cam 4K '너무너무너무(VeryVeryVery)' (I.O.I FanCam) | @MCOUNTDOWN_2016.10.20’ allows us to check the composition and on-site experience of the Very Very Very 4K fan cam in this list,' and the observation criteria is 'the changed part delivery and harmonies across the 2016 full, 7-member unit, and 2026 9-member stages.' The original of 'I.O.I - Very Very Very 4K Fan Cam' that connects to 'I.O.I's Stages with Evolving Vocal Arrangements' is released by the M2 channel, with the registered title being ‘[MPD Fan Cam] I.O.I Fan Cam 4K '너무너무너무(VeryVeryVery)' (I.O.I FanCam) | @MCOUNTDOWN_2016.10.20.’

It’s good to start by seeking what elements are most quickly heard or seen during the first listen or view of the current item from 'I.O.I's Stages with Evolving Vocal Arrangements.' Then, for the second round, choose one element that creates that impression, whether it’s a voice, movement, or arrangement. Make sure to also note how the first and last impressions of ‘I.O.I - Very Very Very 4K Fan Cam’ differ from each other.

This item lies between the earlier ‘I.O.I - Whatta Man Full Fan Cam’ and the latter ‘I.O.I - Pick Me Full Fan Cam.’ Comparing the speed and emotions of these three items, along with their visuals or package compositions, makes it easier to determine if the current item is a connecting point or a turning point. Open the official link of ‘I.O.I - Very Very Very 4K Fan Cam’ from 'I.O.I's Stages with Evolving Vocal Arrangements' to recheck the title and source, and leave a sentence about anything in the description and your judgment that differed. This comparison shows precisely why the current item is placed in this order.
형식 공식 무대·직캠·안무 영상 채널 M2 공식 영상 제목 [MPD직캠] 아이오아이 직캠 4K '너무너무너무(VeryVeryVery)' (I.O.I Fancam) | @MCOUNTDOWN_2016.10.20
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I.O.I - Pick Me Complete Fancam

I.O.I - Pick Me Complete Fancam

I.O.I - Pick Me Full Fan Cam

This section explores the ‘I.O.I - Pick Me Full Fan Cam’ from the piece 'I.O.I's Stages with Evolving Vocal Arrangements.' The key description is 'M2's release of ‘[MPD Fan Cam] I.O.I Fan Cam Pick Me I.O.I Pick me Fancam @M Countdown_161027’ allows us to check the composition and on-site experience of the Pick Me full fan cam in this list,’ and the observation criteria is 'the changed part delivery and harmonies across the 2016 full, 7-member unit, and 2026 9-member stages.' The original of 'I.O.I - Pick Me Full Fan Cam' that connects to 'I.O.I's Stages with Evolving Vocal Arrangements' is released by the M2 channel, with the registered title being ‘[MPD Fan Cam] I.O.I Fan Cam Pick Me I.O.I Pick me Fancam @M Countdown_161027.’

It’s good to start by seeking what elements are most quickly heard or seen during the first listen or view of the current item from 'I.O.I's Stages with Evolving Vocal Arrangements.' Then, for the second round, choose one element that creates that impression, whether it’s a voice, movement, or arrangement. Make sure to also note how the first and last impressions of ‘I.O.I - Pick Me Full Fan Cam’ differ from each other.

This item lies between the earlier ‘I.O.I - Very Very Very 4K Fan Cam’ and the latter ‘I.O.I - Suddenly Relay Dance.’ Comparing the speed and emotions of these three items, along with their visuals or package compositions, makes it easier to determine if the current item is a connecting point or a turning point. Open the official link of ‘I.O.I - Pick Me Full Fan Cam’ from 'I.O.I's Stages with Evolving Vocal Arrangements' to recheck the title and source, and leave a sentence about anything in the description and your judgment that differed. This comparison shows precisely why the current item is placed in this order.
형식 공식 무대·직캠·안무 영상 채널 M2 공식 영상 제목 [MPD직캠] 아이오아이 직캠 픽미 I.O.I Pick me Fancam @엠카운트다운_161027
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I.O.I - Suddenly Relay Dance

I.O.I - Suddenly Relay Dance

This section explores the ‘I.O.I - Suddenly Relay Dance’ from the piece 'I.O.I's Stages with Evolving Vocal Arrangements.' The key description is 'M2's release of ‘[Relay Dance] I.O.I(I.O.I) - 갑자기 (4K)’ allows us to check the composition and on-site experience of the Suddenly relay dance in this list,' and the observation criteria is 'the changed part delivery and harmonies across the 2016 full, 7-member unit, and 2026 9-member stages.' The original of 'I.O.I - Suddenly Relay Dance' that connects to 'I.O.I's Stages with Evolving Vocal Arrangements' is released by the M2 channel, with the registered title being ‘[Relay Dance] I.O.I(I.O.I) - 갑자기 (4K).’

When watching the ‘I.O.I - Suddenly Relay Dance’ video for the first time, observe the overall formation on screen and the camera movements. Then, follow not just the main part player but also the expressions and movements of the surrounding members. Finding the differing breaths or audience reactions compared to the audio in ‘I.O.I - Suddenly Relay Dance’ makes the reason for watching the video clear. Note one element you first remember and one that lingers at the end.

This item lies between the earlier ‘I.O.I - Pick Me Full Fan Cam’ and the latter ‘I.O.I - 갑자기 Dance Practice.’ Comparing the speed and emotions of these three items, along with their visuals or package compositions, makes it easier to determine if the current item is a connecting point or a turning point. Open the official link of ‘I.O.I - Suddenly Relay Dance’ from 'I.O.I's Stages with Evolving Vocal Arrangements' to recheck the title, channel, and release information, and leave a sentence about anything in your impressions that differed. Writing down comparative grounds will clarify the position of ‘I.O.I - Suddenly Relay Dance.’
형식 공식 무대·직캠·안무 영상 채널 M2 공식 영상 제목 [릴레이댄스] 아이오아이(I.O.I) - 갑자기 (4K)
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I.O.I - Suddenly Dance Practice

I.O.I - Suddenly Dance Practice

I.O.I - 갑자기 Dance Practice

This section explores the ‘I.O.I - 갑자기 Dance Practice’ from the piece 'I.O.I's Stages with Evolving Vocal Arrangements.' The key description is 'SWING ENTERTAINMENT's release of ‘I.O.I (아이오아이) '갑자기' Dance Practice’ allows us to check the composition and on-site experience of the Hold On dance practice in this list,' and the observation criteria is 'the changed part delivery and harmonies across the 2016 full, 7-member unit, and 2026 9-member stages.' The original of 'I.O.I - 갑자기 Dance Practice' that connects to 'I.O.I's Stages with Evolving Vocal Arrangements' is released by SWING ENTERTAINMENT, with the registered title being ‘I.O.I (아이오아이) '갑자기' Dance Practice.’

When watching the ‘I.O.I - 갑자기 Dance Practice’ video for the first time, observe the overall formation on screen and the camera movements. Then, follow not just the main part player but also the expressions and movements of the surrounding members. Finding the differing breaths or audience reactions compared to the audio in ‘I.O.I - 갑자기 Dance Practice’ makes the reason for watching the video clear. Note one element you first remember and one that lingers at the end.

This item lies between the earlier ‘I.O.I - Suddenly Relay Dance’ and the latter ‘I.O.I - Where My Girls At Dance Practice.’ Comparing the speed and emotions of these three items, along with their visuals or package compositions, makes it easier to determine if the current item is a connecting point or a turning point. Open the official link of ‘I.O.I - 갑자기 Dance Practice’ from 'I.O.I's Stages with Evolving Vocal Arrangements' to recheck the title, channel, and release information, and leave a sentence about anything in your impressions that differed. Writing down comparative grounds will clarify the position of ‘I.O.I - 갑자기 Dance Practice.’
형식 공식 무대·직캠·안무 영상 채널 SWING ENTERTAINMENT 공식 영상 제목 I.O.I (아이오아이) '갑자기' Dance Practice
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I.O.I - Where My Girls At Dance Practice

I.O.I - Where My Girls At Dance Practice

This section explores the ‘I.O.I - Where My Girls At Dance Practice’ from the piece 'I.O.I's Stages with Evolving Vocal Arrangements.' The key description is 'SWING ENTERTAINMENT's release of ‘I.O.I (아이오아이) 'IOI (Where My Girls At)' Dance Practice’ allows us to check the composition and on-site experience of the Where My Girls At dance practice in this list,' and the observation criteria is 'the changed part delivery and harmonies across the 2016 full, 7-member unit, and 2026 9-member stages.' The original of 'I.O.I - Where My Girls At Dance Practice' that connects to 'I.O.I's Stages with Evolving Vocal Arrangements' is released by SWING ENTERTAINMENT, with the registered title being ‘I.O.I (아이오아이) 'IOI (Where My Girls At)' Dance Practice.’

It’s good to start by seeking what elements are most quickly heard or seen during the first listen or view of the current item from 'I.O.I's Stages with Evolving Vocal Arrangements.' Then, for the second round, choose one element that creates that impression, whether it’s a voice, movement, or arrangement. Make sure to also note how the first and last impressions of ‘I.O.I - Where My Girls At Dance Practice’ differ from each other.

This item lies between the earlier ‘I.O.I - 갑자기 Dance Practice’ and the latter ‘I.O.I - Where My Girls At 8K Fan Cam.’ Comparing the speed and emotions of these three items, along with their visuals or package compositions, makes it easier to determine if the current item is a connecting point or a turning point. Open the official link of ‘I.O.I - Where My Girls At Dance Practice’ from 'I.O.I's Stages with Evolving Vocal Arrangements' to recheck the title and source, and leave a sentence about anything in the description and your judgment that differed. This comparison shows precisely why the current item is placed in this order.
형식 공식 무대·직캠·안무 영상 채널 SWING ENTERTAINMENT 공식 영상 제목 I.O.I (아이오아이) 'IOI (Where My Girls At)' Dance Practice
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I.O.I - Where My Girls At 8K FanCam

I.O.I - Where My Girls At 8K FanCam

I.O.I - Where My Girls At 8K Fancam

The item to explore in ‘I.O.I - Where My Girls At 8K Fancam’ from the stage featuring ‘I.O.I’s changing vocal arrangements during each activity period’ is this one. The key description is that it is ‘[MPD Fancam] I.O.I Fancam 8K ‘IOI (Where My Girls At)’ (I.O.I FanCam) | @MCOUNTDOWN_2026.5.21,’ and the observation criteria are ‘the different parts distribution and harmonies on stage in 2016 with 11 members, 7-member units, and 9 members in 2026’. The original ‘I.O.I - Where My Girls At 8K Fancam’ connected to ‘I.O.I’s changing vocal arrangements during each activity period’ was released by the M2 channel, and the registered title is ‘[MPD Fancam] I.O.I Fancam 8K ‘IOI (Where My Girls At)’ (I.O.I FanCam) | @MCOUNTDOWN_2026.5.21’.

In ‘I.O.I’s changing vocal arrangements during each activity period’, the current item suggests finding the elements that are most noticeable in the first impression, and in the second, selecting one of the voices, movements, or compositions that created that impression. Make sure to also note the differences between the beginning and end of ‘I.O.I - Where My Girls At 8K Fancam’.

Compare the elements before and after ‘I.O.I - Where My Girls At 8K Fancam’ with its speed, emotion, and visuals to confirm the reason for its current placement. Revisit the official link of ‘I.O.I - Where My Girls At 8K Fancam’ to check the title and source again, and it would be good to leave a sentence about any differences between the explanation and your own judgment.
형식 공식 무대·직캠·안무 영상 채널 M2 공식 영상 제목 [MPD직캠] 아이오아이 직캠 8K 'IOI (Where My Girls At)' (I.O.I FanCam) | @MCOUNTDOWN_2026.5.21
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I.O.I - Suddenly 8K FanCam

I.O.I - Suddenly 8K FanCam

I.O.I - Suddenly 8K Fancam

The item to examine this time in ‘I.O.I - Suddenly 8K Fancam’ from the stage featuring ‘I.O.I’s changing vocal arrangements during each activity period’ is this one. The key description is that it is ‘[MPD Fancam] I.O.I Fancam 8K ‘突然’ (I.O.I FanCam) | @MCOUNTDOWN_2026.5.28,’ and the observation criteria are ‘the different parts distribution and harmonies on stage in 2016 with 11 members, 7-member units, and 9 members in 2026’. The original ‘I.O.I - Suddenly 8K Fancam’ connected to ‘I.O.I’s changing vocal arrangements during each activity period’ was released by the M2 channel, and the registered title is ‘[MPD Fancam] I.O.I Fancam 8K ‘突然’ (I.O.I FanCam) | @MCOUNTDOWN_2026.5.28’.

In ‘I.O.I’s changing vocal arrangements during each activity period,’ the current item suggests finding the elements that are most noticeable in the first impression, and in the second, choose one of the voices, movements, or compositions that created that impression. Note how the first and last impressions of ‘I.O.I - Suddenly 8K Fancam’ change as well.

This item is situated between ‘I.O.I - Where My Girls At 8K Fancam’ before and ‘I.O.I - Suddenly Music Bank’ after. By sequentially comparing the speed and emotion, visuals, or package of the three items, it will be easier to determine if the current item is a connecting point or a turning point. Open the official link for ‘I.O.I - Suddenly 8K Fancam’ in ‘I.O.I’s changing vocal arrangements during each activity period’ to check the title and source again, and leave a sentence about any differences between the description and your own judgment. This comparison will specifically illustrate the reason for the current item’s placement in this order.
형식 공식 무대·직캠·안무 영상 채널 M2 공식 영상 제목 [MPD직캠] 아이오아이 직캠 8K '갑자기' (I.O.I FanCam) | @MCOUNTDOWN_2026.5.28
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I.O.I - Suddenly Music Bank

I.O.I - Suddenly Music Bank

The item to explore this time in ‘I.O.I - Suddenly Music Bank’ from the stage featuring 'I.O.I’s changing vocal arrangements during each activity period’ is this one. The key description is that it is '[COMEBACK] I.O.I アイ・オー・アイ 아이오아이 - Suddenly [Music Bank] | KBS WORLD TV 260522,’ and the observation criteria are ‘the different parts distribution and harmonies on stage in 2016 with 11 members, 7-member units, and 9 members in 2026’. The original ‘I.O.I - Suddenly Music Bank’ connected to ‘I.O.I’s changing vocal arrangements during each activity period’ was released by the KBS WORLD TV channel, and the registered title is '[COMEBACK] I.O.I アイ・オー・アイ 아이오아이 - Suddenly [Music Bank] | KBS WORLD TV 260522’.

In ‘I.O.I’s changing vocal arrangements during each activity period,’ the current item suggests finding the most noticeable elements in the first impression, and in the second, select one of the voices, movements, or compositions that created that impression. Note how the first and last impressions of ‘I.O.I - Suddenly Music Bank’ differ as well.

The current item concludes the list after the previous ‘I.O.I - Suddenly 8K Fancam’. Comparing the final impressions left by the two items reveals why the list ends in this order. Open the official link for ‘I.O.I - Suddenly Music Bank’ in ‘I.O.I’s changing vocal arrangements during each activity period’ to verify the title and source again, and leave a sentence about any differences you noticed between the description and your own judgment. This comparison will specifically illustrate why the current item is placed in this order.
형식 공식 무대·직캠·안무 영상 채널 KBS WORLD TV 공식 영상 제목 [COMEBACK] I.O.I アイ・オー・アイ 아이오아이 - Suddenly [Music Bank] | KBS WORLD TV 260522
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Following the ten videos reveals that the same song fills up spaces differently based on whether it’s performed by 11 members in full, a unit of 7, or a reunion of 9. Even when parts are short, they can transition smoothly to the next voice, and as the number of members decreases, one member’s vocal color and movements can linger longer. The changes in lineup itself serve as an important clue for appreciation.

When revisiting these, pair up one full-screen video with a nearby fan cam. The full video showcases harmonies and formations, while the fan cam helps observe breathing and expressions before and after parts. If you note one vocal that’s changed the most and one characteristic of the team that has remained consistent from the 2016 to 2026 videos, the purpose of this list becomes clearer.
한눈에 보기 10개
I.O.I - Dream Girls Complete Fancam
공식 무대·직캠·안무 영상 · M2 · [MPD직캠] 아이오아이 직캠 Dream Girls I.O.I Fancam @엠카운트다운_160505
I.O.I - Whatta Man Complete Fancam
공식 무대·직캠·안무 영상 · M2 · [MPD직캠] 아이오아이 직캠 'Whatta Man' (I.O.I FanCam) | MCOUNTDOWN_2016.8.11
I.O.I - Very Very Very 4K Fancam
공식 무대·직캠·안무 영상 · M2 · [MPD직캠] 아이오아이 직캠 4K '너무너무너무(VeryVeryVery)' (I.O.I Fancam) | @MCOUNTDOWN_2016.10.20
I.O.I - Pick Me Complete Fancam
공식 무대·직캠·안무 영상 · M2 · [MPD직캠] 아이오아이 직캠 픽미 I.O.I Pick me Fancam @엠카운트다운_161027
I.O.I - Suddenly Relay Dance
공식 무대·직캠·안무 영상 · M2 · [릴레이댄스] 아이오아이(I.O.I) - 갑자기 (4K)
I.O.I - Suddenly Dance Practice
공식 무대·직캠·안무 영상 · SWING ENTERTAINMENT · I.O.I (아이오아이) '갑자기' Dance Practice
I.O.I - Where My Girls At Dance Practice
공식 무대·직캠·안무 영상 · SWING ENTERTAINMENT · I.O.I (아이오아이) 'IOI (Where My Girls At)' Dance Practice
I.O.I - Where My Girls At 8K FanCam
공식 무대·직캠·안무 영상 · M2 · [MPD직캠] 아이오아이 직캠 8K 'IOI (Where My Girls At)' (I.O.I FanCam) | @MCOUNTDOWN_2026.5.21
I.O.I - Suddenly 8K FanCam
공식 무대·직캠·안무 영상 · M2 · [MPD직캠] 아이오아이 직캠 8K '갑자기' (I.O.I FanCam) | @MCOUNTDOWN_2026.5.28
I.O.I - Suddenly Music Bank
공식 무대·직캠·안무 영상 · KBS WORLD TV · [COMEBACK] I.O.I アイ・オー・アイ 아이오아이 - Suddenly [Music Bank] | KBS WORLD TV 260522

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