They dance along as they sing the song. ALL: We love counting up to 10, but we know that’s not the end.Still to come are all the teens and after that we reach 20. The girls sing quietly.

And in honor of his birthday this week, we're counting down his top 10 biggest Billboard hits. No. 10 is a song with the same name as Bruno Mars' last album, 24K Magic. The song debuted at No.