On the level 'The Murder of Crows', go to any of the bars (Rock, Salsa, Blues) and go around the outside to the alley behind the bar.

Wait for the drunk to be alone with you and sedate him, then hide his body in the dumpster.

Now go around to the front & enter the bar. Go to the dance floor and stand there in third person view.

Wait, after a while 47 will begin to move to the beat (he does the same at every bar, but it looks more in tune at the blues bar).