I've got a Y6 class for my final placement and I think they'd really enjoy some rapping. Problem is, I want to tie it into the Olympics and look at world peace, but I can't seem to find a good song to use as a stimulus that's clean. I don't want edited versions or anything that had any swear words originally. I really like the song 'Tupac - changes' but it's completely inappropriate with its language. Any ideas?