Bars in this period often booked bands for six night stints, from Monday to Saturday.
For most of 1973 Max Webster were a cover band, with a repertoire including things like Frank Zappa, Captain Beefheart, Jethro Tull, J. Geils Band, Led Zeppelin, and The Who. They often opened with Peaches en Regalia, which may well be why the band used this as their entrance music to their final reunion show in 2007.
Keyboardist Jim Bruton (often referred to as "Sparks") had joined the band by this point, making them a quartet. Drummer Phil Trudell soon departed, with Paul Kersey replacing him on April 1. Bruton's contribution to the band is significant, as it is he who recommended Mike Tilka to Kim Mitchell to start the band in the first place.
Kim Mitchell - Vocals/Guitar
Mike Tilka - Bass
Jim Bruton - Keyboards
Paul Kersey - Drums