What other bands has Patrick Maraz play for before joining the Moody Blues?

Before joining the Moody Blues, Patrick Moraz played for several bands, most notably for the progressive rock group Yes, where he replaced Rick Wakeman. He also performed with the band Refugee, which featured former members of The Nice. Additionally, Moraz was involved with other projects, including work with the band Mainhorse. His diverse musical background contributed to his unique sound with the Moody Blues.