Conversation so far:
What was the new musical direction that the band, Journey went in?
The band, Journey hired Robert Fleischman in 1977 and made the transition to a more popular style, akin to that of Foreigner and Boston.
How did Steve Perry change the direction of the band, Journey?
Steve Perry brought a radically new, more pop-influenced style sense to Journey's music, despite some grumblings from his new bandmates and fans of Journey's former progressive rock sound.
Did the band, Journey release any albums during the 1977 to 1980 period?
With their new lead singer Steve Perry and new producer Roy Thomas Baker, Journey released their fourth album, Infinity.
What musical singles were on Journey album, Infinity?
The album Infinity was their first RIAA-certified platinum album, and with their hit song Wheel in the Sky, Journey set on a new path with a more mainstream sound.

Question: Who played guitar for the band during this period?
Self-contained rewrite: Who played guitar for the band, Journey during their period of new musica direction?