Parliament weren't great party music, they were just great parties, period, with enough people and enough fun happening on stage that they could've played sets for totally empty auditoriums and it probably wouldn't even have seemed that weird. "Flash Light" was the perfect in-concert jam for them, a song you could focus on for about a minute of squawking synths and the Mothership taking flight, and then just boogie around the stage and shoot bop guns at people for however long the crowd was feeling it. Usually a pretty long time.