Peter Zummo is an American composer and trombonist. He has been described as "an important exponent of the American contemporary classical tradition." He has called his own work "minimalism plus a whole lot more."

Since 1967, Zummo's compositions exploring rock, jazz, new music, electronic music, disco, punk, and world music have been presented in venues including Brooklyn Academy of Music, New York City Center, Experimental Intermedia Foundation, Roulette, The Kitchen, Dance Theater Workshop, and La MaMa Experimental Theatre Club, among many others in New York City. He has appeared in additional venues across the country and worldwide, including Café Oto and King's Place in London, KRAAK Festival in Brussels, and Rewire Festival in The Hague.

The website of the music magazine Pitchfork called Zummo's music “the sound of sublimity…that sends shivers down the nervous system,” and in an interview with The Quietus, Scottish deejay JD Twitch (Keith McIvor) characterized Zummo's work as “sheer bliss.”

In the British culture blog "The Ransom Note," Tim Wilson wrote that some of Zummo's "most familiar" music was created with cellist Arthur Russell. Zummo played on most of Russell's recordings and produced several of them. According to a review of their collaboration in The New Yorker, “phrases emerge and wrap around each other: Peter Zummo’s gorgeous trombone motif, Russell’s pizzicato cello theme, and a growing drone of loud, dissonant guitars…When the smoke clears, genre is just a memory.”

Russell, in turn, played often for Zummo, notably on the Bessie Award–winning composition Lateral Pass, created for a dance by choreographer Trisha Brown, with a stage set by artist Nancy Graves. In 2014, Foom Music, in London, released an original recording of this 1985 piece. Said Piccadilly Records, the recording demonstrated that “Zummo’s signature trombone style, renowned for its rich and soothing tone, has become one of the most beloved features of Russell’s celebrated sound."

In 2014, Mikhail Barishnikov's Baryshnikov Arts Center, in New York City, awarded Zummo and bass player Ernie Brooks a residency for the creation of new work. Additional support over the years has come from the National Endowment for the Arts, the New York State Council on the Arts, Meet the Composer, the New York Foundation for the Arts, and other funders.

Zummo appears as himself in Jonathan Demme's Accumulation with Talking Plus Water Motor, a film featuring Trisha Brown, and in Wild Combination: A Portrait of Arthur Russell, a documentary by Matt Wolf. His reflections on working with Russell can be heard in a Roulette Intermedium interview. Zummo contributed to the score of Tramas, Italian director Augusto Contento's cinematic portrait of São Paulo, Brazil, worked with artist Donald Judd to realize a work accompanying Trisha Brown's choreography for Newark, and played for Andrei Șerban–Liz Swados collaborations, including Fragments of a Greek Trilogy.

Zummo performs for other bands and bandleaders, including the Lounge Lizards, Gods and Monsters, Stephen Gaboury’s B-Twist Orchestra for the dance company Ballets with a Twist, Go: Organic Orchestra, Tilt Brass, Downtown Ensemble, Flexible Orchestra, The Necessaries, and Dinosaur L. He has also played in units put together by composers David Behrman, Philip Corner, Guy De Bièvre, Tom Hamilton, William Hellerman, Annea Lockwood, Jackson MacLow, Ben Neill, Phill Niblock, Pauline Oliveros, Vernon Reid, Steve Swell, Yasunao Tone, Lise Vachon, Yoshi Wada, and others. Zummo performed on Teo Macero’s Fusion, which featured both the Lounge Lizards and the London Philharmonic Orchestra.