Conversation so far:
when did Richard Branson's record business start?
Branson in 1972 launched the record label Virgin Records with Nik Powell.
what is the name of his record business?
Virgin Records.
why did he choose the name Virgin?
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 Virgin Records sign?