Conversation so far:
When did the band, Journey reach their peak of popularity?
With Jonathan Cain on board, the band, Journey began writing material that would eventually lead up to Journey's biggest studio album, Escape. Recording sessions began in April 1981.
How many Escape albums did the band, Journey sell?
Journey album Escape was certified 9x platinum by the RIAA and sold over twelve million copies worldwide.
Did the band, Journey win any awards for their album, Escape?

Question: What were some of their most popular singles?
Self-contained rewrite: What were some of the band, Journey's most popular singles?