Popular music, hip hop without and violence?

I've been put in charge of music to play outside during field day at an elementary school. Sort of a DJ deal. I'm not even going to pretend I have any idea what children and teenagers listen to that's popular. I have some old stuff like the chicken dance, Eye of the tiger, cupid shuffle, etc to play, but I wanted to include some stuff the older kids might like. Does anyone know of any current songs I could download that don't include overtly ual or violent lyrics?