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DJ Earworm made this music video mashup to be shown as part of a concert at Wembley Stadium in London for Capital FM’s Summertime Ball, where all fifteen of these artists performed.
There’s a mix of artists from the UK and the America’s, and the track list is here:

Alexandra Burke - All Night Long
Cheryl Cole - Fight For This Love
Chipmunk feat. Esmee Denters – Until You Were Gone
Dizzee Rascal – Bonkers
Ellie Goulding – Starry Eyed
Jason Derulo – In My Head
JLS – One Shot
Justin Bieber – Baby
Ke$ha – Tik Tok
Pixie Lott - Mama Do
Rihanna – Rude Boy
Scouting For Girls – This Ain’t a Love Song
Tinie Tempah – Pass Out
Usher feat. Will.I.Am - OMG
The Wanted – All Time Low