The Either/Orchestra (E/O) is a vibrant jazz ensemble founded in Cambridge, Massachusetts, in 1985 by Russ Gershon. Combining influences from Duke Ellington, Gil Evans, Charles Mingus, and Sun Ra, E/O stands as a "small big band" with a distinctive sound. Their repertoire spans from early jazz to avant-garde, and they skillfully integrate elements of pop and rock. Embracing improvisation, their music captivates audiences with a mix of passion, skill, and surprises. The group's extensive tours, including Ethiopia, add to their rich musical legacy that encompasses numerous acclaimed albums and collaborations with renowned artists.