. >> rose: mark ronson is here, the british producer made his name as a deejay in the '90s new york city the year. uptown special according to "time magazine" has skill and intelligence. uptown funk has been viewed on youtube more than 1.5 billion times. here's a look at uptown funk featuring bruno mars. ♪ hollywood, jackson, mississippi ♪ ♪ girls hit your hallelujah ♪ uptown funk gonna give it to ya ♪ ♪ 'cause uptown funk gonna give it to ya ♪ ♪ saturday night and we in the spot ♪ ♪ don't believe me just watch >> rose: mark ronson, welcome. thank you for having me. >> rose: you said you worked on uptown funk to within an inch of its life. >> yes. what happened with that song is it started off as a jam in bruno's studio. bruno was on the drums, i was on bass, jeff was on the synth. sometimes a jam is a waste of time but i've now and then you hit a rhythm and that one felt great. the jam is like conceiving a baby, anything is possible. it could go this way or that way. >> rose: improvisational. and that's fun and the sky is the limit, and then you get to the point six months down the line

from mark wallinger and the white stripes, to mark ronson, paloma faith and radiohead's thom yorke.nd just be himself. that's why you get this amazing raw physicality. i guess when you're working with somebody like that, myjob is to recognise it, find it, and just help it on its way. it's not to go, "well, let's move like this." and the chemical brothers video? that's a totally different process. the technological process of that is very different. that pushes some of your buttons, doesn't it? it certainly does. and it was one shot, you probably noticed. so the camera shows four and a half minutes. and then that really, really long technological process. please join me in welcoming the lovely ladies... then there are the films. as movement director on this harry potter, the choreography element is obvious. but there's a wayne mcgregor signature to alexander ska rsgard's performance in the legend of tarzan, if you look carefully. and his latest endeavour was fantastic beasts. when you're working on something like the obscurus in fantastic beasts, how can you make some physical activi