Synonyms for Cellist:

n.

drum major, bandsman, busker, concertmaster, accompanist. musician (noun)
trumpeter, maestro, player, harpist, flutist, Accordionist, bass, guitarist, saxophonist, singer, bassoonist, banjoist, musician, keyboardist, pianist, arranger, bassist, performer, tenor, instrumentalist, composer, drummer, harpsichordist, virtuoso, oboist, baritone, violinist, alto, clarinetist, trombonist, soprano, fiddler.

Other synonyms:

drum major, bandsman, busker, concertmaster, accompanist. Other relevant words:
concertmaster, bandsman, busker, accompanist.