Nick Cave is an Australian singer who led a band called "The Birthday Party." He settled in Berlin in the late 80 with a new band (then)called "The Bad Seeds," joined by german "musician" Blixa Bargeld, the former frontman for the band "Einsturzende Neubauten" (translates as "collapsing new buildings.")
The Bad Seeds are the band planying in that final bar scene when the angel finally meets with the woman. This is where my arm got shorter.
I just realized that his name sounds like "Nick Cage" who played the angel in the american "remake" of the movie. I have to stop, I've run out of quotation marks.