Conversation so far:
What were Chumbawamba's Prop Records?
By 1980s Chumbawamba had begun to release material using the vinyl format on their own Agit-Prop record label, which had evolved from an earlier project, Sky and Trees Records.
Who produced Chumbawamba's album, Pictures of Starving Children Sell Records?
Pictures of Starving Children Sell Records is the debut studio album by British band Chumbawamba, released in 1986 on Agit-Prop Records
Are there any other interesting aspects about Chumbawamba besides debut album?
The first LP, Pictures of Starving Children Sell Records (1986) was a critique of the Live Aid concert organised by Bob Geldof.

Question: what was the member collaboration?
Self-contained rewrite: What was the member collaboration Chumbawamba did??