If I understand it correctly, you're looking for some kind music that 'll cheer you up. To be honest, I think good music is almost always aimed at making you ponder, and I'm not quite sure if that can be cheering in the classical sense. However, there is - I think- a cheerful (most times in the sense of ironical defiance) mood in Cypress Hill 's songs, though it doesn't hinder it's social-political message at all. You can even try listening to (the few) good mainstream pop bands, (I'd suggest Bee Gees or The Beatles) or mainstream reggae bands like (post-Jacob Miller) Inner Circle or Big Mountain