The noise was to the tune of the song "What Happened To That Boy," by rapper Birdman (formerly known as "Baby") featuring the group Clipse (which had Pusha T and Malice). It was pretty hilarious, but it was even more funny when former NBA head coach Doug Collins joined in with him when he sang the chorus alongside with Rose.
Watch it below:
https://www.youtube.com/watch?v=MX6rC1krGp0&feature=kp