Conversation so far:
What happened in 1957?
Teenagers Rosalind Ashford and Annette Beard first became acquainted after a local music manager hired them to be members of a girl group he named The Del-Phis.
did they become friends?
CANNOTANSWER.

Question: Did they produce music?
Self-contained rewrite: Did Rosalind Ashford and Annette Beard produce music?