UllrGrass takes place in Golden, Colorado on January 31-February 1, 2026, featuring 17 artists including headliners Ullrgrass All-Stars, Coral Creek, and Rebecca Frazier. This pop music festival showcases established acts like Tom Knowlton Bluegrass Band, Tyler Grant Bluegrass Farm, and Jake Leg alongside emerging artists such as Moonshroom and Stillhouse String Band. The two-day event brings together diverse performers including David Lawrence & The Spoonful, Ms Amy & The Jet Set, and Jason Beard's Bring Joy for a comprehensive pop music experience in Colorado.