Mark Stewart is a New York City-based multi-instrumentalist, composer, singer and instrument designer. He has been a member of the Bang on a Can All-Stars, the Fred Frith Guitar Quartet, Steve Reich and Musicians, Zeena Parkins' Gangster Band, and Arnold Dreyblatt's Orchestra of Excited Strings. Stewart is a founding member of the Bang on a Can All-Stars band and The Jerry Wortman Nonette. Also, he has worked with Paul Simon, Anthony Braxton, Bob Dylan, Cecil Taylor, Meredith Monk, Philip Glass, Bruce Springsteen, Edie Brickell, Don Byron, Paul McCartney, Marc Ribot, and in the duo Polygraph Lounge with , with whom he also contributed to Simon & Garfunkel's "Old Friends" reunion concert tour. He plays many experimental and lesser-used instruments, such as the daxophone and theremin.