Conversation so far:
when did Richard Branson's record business start?
Earning enough money from his record store, Branson in 1972 launched the record label Virgin Records with Nik Powell.
what is the name of Richard Branson's record business?
Virgin Records
why did Richard Branson choose the name Virgin Records for his record business?
The name Virgin was suggested by one of Branson's early employees because they were all new at business.

Question: what bands did they sign?
Self-contained rewrite: what bands did Richard Branson's Virgin Records sign?