Olivier Zyngier: vocals, guitar, mandolin

Paris born Olivier Zyngier founded Bistro Moustache specifically to showcase the French café music, a genre he (re)discovered long after moving to the United States. He has played bass, guitar and mandolin in a variety of musical styles, including Bluegrass, Western Swing, Country, Gypsy Swing, Irish folk, French traditional, Klezmer, Balkan, Choros, etc. He is also or was previously with the Baguette Quartette, the Mandorian Candidates mandolin trio, Swing Tonic, Douce Ambiance, Redwing Bluegrass band, and the elusive Instant Klezmer Mandolin Orchestra. He is the bass player in the swing trio Swing Shift.

Richard Southwick: guitar, clarinet

Born in Boston, Richard joined his first band when he was 16, and had to sneak into the clubs to play under the suspicious gaze of club owners. Since then, he's played up and down both US coasts, and in England. He's played in a wide variety of jazz, blues and R&B groups, on guitar, saxophone and clarinet. Richard is the lead singer and guitarist in the swing trio Swing Shift.

Robert Kennedy: accordion

Robert Kennedy is a Hammond organist, pianist, and accordionist born and raised in the American South who has lived and worked in the San Francisco bay area since 1988 when he began playing bebop and hard-bop jazz piano after growing up with classical and rock. In the late 2000s he fell in love with soul jazz through the Hammond organ, and in the late 2010s with jazz and swing accordion as a member of Mission Hot Club. He performs and records in a variety of genres with numerous bay-area groups and artists.