Complex sentence: This was scheduled to be the band's first and last show and Putnam had invited future member Fred Ordonez, from the band Shit Scum to it, but he failed to turn up.
Split into simpler sentences: This was scheduled to be the band's first and last show. Putnam invited future member Fred Ordonez, from the band Shit Scum, to the show, but he failed to turn up.