In addition to composition Berger is an active researcher with publications in a wide range of fields relating to music, science and technology.
Berger's operas, Visitations, with libretti by playwright and poet Dan O'Brien, premiered in New York in 2014 and has received subsequent performances in Rome and Boston.
His chamber opera, My Lai was performed at the 2017 NextWave Festival in New York, by Rinde Eckert, Van Anh Vo, and the Kronos Quartet and subsequently toured in Asia and the United States.
Berger's opera, The Ritual of Breath is the Rite to Resist, with libretto by poet Vievee Francis is a reaction to the murder of Eric Garner.
His works can be heard on the Smithsonian/Folkways, Eloquentia, Naxos, Sony Classical, Harmonia Mundi, Centaur, Neuma, CRI, and CCRMA labels.