Conversation so far:
How many members were in the band The Birthday Party?
The Birthday Party – singer and songwriter Nick Cave, multi-instrumentalist and songwriter Mick Harvey, and singer, songwriter and guitarist Rowland S. Howard – later went on to acclaimed careers.
How did members of the band The Birthday Party know each other?
The nucleus of the band first met at the private boys school Caulfield Grammar School, in suburban Melbourne, in the early seventies.
What type of music did the band The Birthday Party play?
The Birthday Party were an Australian post-punk band.

Question: Did they write their own music?
Self-contained rewrite: Did the band The Birthday Party write their own music?