But the song Forever young is not new, its pretty old, this is just a cover or maybe a remix with the hook..
http://www.youtube.com/watch?v=n7CuJ8cR9sg&feature=PlayList&p=0D1AD7C734DF42F1&playnext=1&playnext_from=PL&index=7
Perhaps he took the idea of liking it with a rap from the group you are mentioning..