Clarinetist, Nicholas Gallas has performed as a guest with a diverse range of artists and ensembles, including the Imani Winds, NOW Ensemble, Decoda, Argento Chamber Ensemble, Ensemble Signal, the Knights, Useful Chamber, the New Jersey Symphony Orchestra, the American Symphony Orchestra, American Ballet Theater, the Britt Festival Orchestra, the Harrisburg Symphony, the Stamford Symphony, the Northeastern Pennsylvania Philharmonic, the Princeton Symphony, Onsite Opera, the Hudson Valley Philharmonic, Symphony in C, Chamber Orchestra of New York, the New Jersey Festival Orchestra, the Metropolis Ensemble, Sylvan Winds, Broadway Chamber Players, Either/Or, the Axiom Ensemble, Mimesis Ensemble, and the New Juilliard Ensemble. He has also taught and performed in Mexico with Cultures in Harmony, an international cultural diplomacy project.

He has performed on Broadway in the orchestras for The King and IFiddler on the RoofNatasha, Pierre and the Great Comet of 1812, and Sunset Boulevard, and has toured the U.S. with singer-songwriter, Duncan Sheik. Additionally, he can been heard on the soundtrack for the film Besa, scored by Philip Glass and the Spike Lee film, Da Sweet Blood of Jesus, scored by Bruce Hornsby.

Gallas is currently a member of the American Modern Ensemble. From 2009-2014 he was a member of the Quintet of the Americas, a woodwind quintet that was founded in 1979 in Bogotá, Columbia.

Gallas received his Master of Music degree from the Juilliard School and his Bachelor of Music degree from the Cleveland Institute of Music.