Click on each project below for more information and videos.

Solo Piano

Gregg’s solo performances feature his dynamic original compositions - which fuse the classical and jazz traditions he loves into a new, deeply personal language - and a seamless blend of music that eliminates the idea of genre. His acclaimed piano suite, A Single Noon, is a musical tableau of life in New York City told through a combination of composed music and improvisation. Other recent piano compositions include Notes From Underground, commissioned by SubCulture NY, and a tribute to Leonard Bernstein. MORE INFO


These intimate song concerts feature Gregg's acclaimed settings of poems by Emily Dickinson, Clementine Von Radics, Christina Rossetti, Sara Teasdale, Elinor Wylie, Stephen Crane, Mark Twain, and William Butler Yeats, paired with fresh takes on classic art songs and new arrangements of folk songs. Gregg has performed and recorded with mezzo-soprano Jennifer Johnson Cano, soprano Melody Moore, mezzo-soprano Adriana Zabala, tenor Matthew Polenzani, baritone Joshua Jeremiah, baritone Matthew Worth, and others. MORE INFO

Chamber Music

These concerts feature collaborations with artists encompassing a wide spectrum of musical flavors, performing Gregg's dynamic chamber music compositions and innovative arrangements of rock, pop, and jazz with improvisation alongside classic repertoire. Recent collaborators include cellist Joshua Roman, violinist Miranda Cuckson, accordion/bandoneón player Julien Labro, the Attacca Quartet, percussionist Richie Barshay, tap dancer Andrew Nemr, beat-boxer Mark Martin, and others. MORE INFO

The Tell-Tale Heart

Ever since Gregg unveiled his setting of Edgar Allan Poe's terrifying short story, The Tell-Tale Heart, in a 100-year-old vaulted crypt in New York City in 2016 (just before Halloween!), sold-out audiences have reveled in this musical ghost story - a "simultaneously macabre and, at moments, darkly humorous... grand tour de force." (Opera News) Conceived by Kallor as a campfire tale that fully immerses its listeners in Poe’s gripping confession of a murderous narrator, The Tell-Tale Heart transcends the horrific to elicit chilling empathy from its audience. Witness the electrifying communicative power of chamber music in a program that flows seamlessly from beloved art songs to dynamic contemporary compositions. MORE INFO


Sketches from Frankenstein, premiered in October 2018, encompasses three scenes of a planned two-act opera that focuses on the heart and essence of Mary Shelley’s timeless, haunting work: the deep pathos of Victor Frankenstein’s creation and the heartbreaking struggles with morality and love among the novel’s characters. David Patrick Stearns writes, "The observations in the words, and the depth of feeling in the music were extremely powerful… the monster’s anguished monologue that encompasses so much of the story’s larger themes could easily be a ‘scena’ to perform in recitals... Singers are augmenting their standard romantic-era Schubert/Schumann/Wolf repertoire in any number of ways, and the penetrating dramatic truths of Frankenstein might co-exist with 19th-century lieder more easily than one might think.” MORE INFO