Conversation so far:
What was the formation of the band Coil?
Initially envisioned as a solo project by singer and songwriter John Balance, Coil evolved into a full-time project with the addition of artistic creative partner Peter Christopherson.
What happened in the early years with the band Coil?
A Throbbing Gristle fan, John Balance had contacted them via mail, and thus befriended the Throbbing Gristle frontman Genesis P-Orridge.

Question: When did this take place?
Self-contained rewrite: When did Coil singer and songwriter John Balance contact Throbbing Gristle?