Steve Earle & the Bluegrass Dukes, Hot Rize, Del McCoury Band and Earl Scruggs with Family & Friends are among the acts scheduled to appear at the 37th Annual RockyGrass festival. The three-day event will take place along the St. Vrain River in Lyons, CO from July 24-26. Other acts scheduled to appear include Claire Lynch Band, California, Michael Cleveland & Flamekeeper, Danny Paisley & The Southern Grass, Mike Marshall & Darol Anger w/ Vn, Darrell Scott Bluegrass Band, Three Ring Circle, Kruger Brothers, Bearfoot, Sarah Jarosz and The High 48s. A handful of additional acts will be added to the festivals lineup in the coming months.