Synonyms for Combo:

n.

blend, combination, mixture, hybrid, mix, compound, amalgam, concoction, jumble. brass band, chamber orchestra, girl band, ensemble, boy band, consort, band, dance band, gamelan. amalgam (noun)
compound.
association (noun)
combination, band.
assortment (noun)
mixture, jumble.
band (noun)
ensemble.
combination (noun)
amalgam, mixture, mix.
combo (noun)
jazz group, jazz band.
composite (noun)
blend.
group (noun)
jazz group, jazz band.
mix/mixture (noun)
hybrid, concoction.
musical group (noun)
band.

Other synonyms:

blend, brass band, hybrid, combination, amalgam, dance band, boy band, concoction, girl band, gamelan, jumble, chamber orchestra. mixture, compound. mix, ensemble. consort. band. Other relevant words:
amalgam, compound, concoction, hybrid, dance band, gamelan, blend, band, chamber orchestra, ensemble, mix, mixture, combination, brass band.