Conversation so far:
When did he join bread?
Robb Royer and Jimmy Griffin co-founded Bread with David Gates in 1968.
How did the band start?
Maria Yolanda Aguayo once again contributed to the band's history when she revealed a trend she noticed as (Record Producer) Gary Usher's desk girl.

Question: What trend was that?
Self-contained rewrite: What trend was Bread?