Summer Mastous was the lead singer for The Fisticuffs Bluff, the brainchild of Drew Gilbert. Drew wrote all of the guitar music for the band, while Summer wrote lyrics and sang.

In Olympia, Washington, she played keyboards for the band Love As Laughter. She was also in the band Octant, the brainchild of the husband-and-wife team Matthew Steinke and Tassy Zimmerman.

In 1997, Summer and Donovan Skirvin performed the music for a Miranda July CD. The following year she and Donovan released Ida Sessions.