d.j.in the new york city club scene and has worked with some of the biggest names including adele, amy winehousetney. his new album "uptown special" earned ronson two awards at this year's grammy, including record of the year. his single "uptown funk "has been viewed on youtube more than 1.5 billion times. >> what happened with that song it started off as a jam in bruno's studio. it was an improvisational jam. bruno office the drums, i was on bass, and, you know, every now ask then, a jam is just a bunch of useless wasting time. and sometimes you hit into a rhythm, and that one felt great. and then the difference is, i guess, with when you're starting a song, the jam is, like, conceiving the baby. anything is possible, you know. it's endless. it's like it could go this way, it could go this way. >> rose: the improvisational part. >> yeah, it's fun, and the sky's the limit. and you get to the point six months down the line and you say how do we rewrite the crib. and that's like raising the child. when you have something that everyone in the room feels like has the potential to be great, it's a li