It's on Just Dance Kids 2. It's sung by Miley Cyrus. Covered by The Just Dance Kids.
Videos
Just Dance Kids 2 - "Start All Over" - 2,140 + Score
Trivia
- This is the first Miley Cyrus song in the series the 2nd is We Can't Stop as DLC from Just Dance 2014, and 3rd is 4x4 on Just Dance 2015.