Conversation so far:
what were the prop records?
By the mid-1980s Chumbawamba had begun to release material using the vinyl format on their own Agit-Prop record label.
who produced the album?
The first release was the Revolution EP in 1985.
Are there any other interesting aspects about this article?
The band toured Europe with Dutch band the Ex, and a collaboration between members of the two bands.

Question: what was the member collaboration?
Self-contained rewrite: what was the member collaboration in chumbawumba?