You can find the video on Caspar Lee’s channel:
https://www.youtube.com/user/dicasp
Conor Maynard is the one singing in this video, this is his channel:
https://www.youtube.com/user/skillzaisherebooya
Caspar Lee is lip syncing the last part, the one who sung that part is Daecolm, his channel is:
https://www.youtube.com/channel/UCfHLcSNbSh1P4iGv7XrXoIw
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