The following bands joined us for HONK! in 2025:

• All For One Brass Band (New Orleans, LA)
• aNova Brazil (Boston, MA)
• Band Together (pickup band) (Somerville, MA)
• Black Sheep Ensemble (Atlanta, GA)
• The Brass Balagan (Burlington, VT)
• Brasscals (Santa Barbara, CA)
• Brass Liberation Orchestra (San Francisco, CA)
• Brass Solidarity (Minneapolis, MN)
• The Bread and Puppet Circus Band (Glover, VT)
• Clamor and Lace Noise Brigade (Chicago, IL)
• DC Activist Street Band (Washington, DC)
• Dirty Water Brass Band (Boston, MA)
• Emperor Nortons Stationary Marching Band (Somerville, MA)
• Expandable Brass Band (Northampton, MA)
• Extraordinary Rendition Band (Providence, RI)
• Fly By Brass Band (Somerville, MA)
• Forward! Marching Band (Madison, WI)
• Good Trouble Brass Band (Somerville, MA)
• Greenbelt Honk! Situation (Greenbelt, MD)
• Hartford Hot Several (Hartford, CT)
• HONK Family Band (New York, NY)
• Ideal Maine Social Aid and Sanctuary Band (Portland, ME)
• Kandjanwou Rara (Boston, MA)
• Leftist Marching Band (Portsmouth, NH)
• L Train Brass Band (Brooklyn, NY)
• May Day Marching Band (Pittsburgh, PA)
• The Party Band (Lowell, MA)
• Rude Mechanical Orchestra (New York City, NY)
• School of HONK (Somerville, MA)
• Undertow Brass Band (Providence, RI)
• Yes Ma am Brass Band (Austin, TX)