Jazz Festival in Longmont, Colorado
Find jazz festivals in Longmont, Colorado. Improvised music built on swing rhythm and rich harmony, where soloists spontaneously invent melodies over a rhythm section's shifting chords and players trade ideas in real time.
Atom Jazz Fest 2026
📅 Aug 21, 2026, 12:00 AM
📍 Left Hand Brewing Garden, Longmont, CO
The inaugural Atom Jazz Fest brings three days of live jazz to the Left Hand Brewing Garden in Longmont, with a lineup that spans student ensembles and Front Range professionals alongside nationally touring acts. Headlining performances come from the Ken Walker Tribute Sextet and Electric Giz, with sets from the Health Walton Quintet, Adam Bodine Quartet, Stafford Hunter Quintet, Alex Loran Sextet, Guerrilla Fanfare, Deborah Stafford Swingtet, and more than a dozen other groups. The Atom Jazz Network, a Northern Colorado 501(c)(3) nonprofit, produces the festival as a direct investment in regional jazz education, mentorship, and gig opportunities for emerging musicians. Admission is free and the event is open to all ages.
Jazz Festival in Longmont, Colorado: what to expect
Jazz festivals in Longmont, Colorado: what's coming up and the local performers behind it, all hosted by people rooted in the Longmont scene.
A Front Range city between Boulder and the foothills, with a revitalized downtown and a growing grassroots music and arts scene built around its breweries, theaters, and community stages.
Improvised music built on swing rhythm and rich harmony, where soloists spontaneously invent melodies over a rhythm section's shifting chords and players trade ideas in real time.
Spans a packed lineup of many acts across one or more days. You roam between stages and sets at your own pace rather than sitting through a single program.
On the calendar now: "The inaugural Atom Jazz Fest brings three days of live jazz to the Left Hand Brewing Garden in Longmont, with a lineup that spans student ensembles and Front Range professionals alongside nationally touring acts".
Browse the events above for dates and details, then book directly with the host. Finding jazz festivals in Longmont, Colorado should feel like a tip from a local, because that is exactly where these listings come from.