With their latest album, “Get Yourself Outside,” Colorado-based quintet Yonder Mountain String Band continues to solidify their place as not only a pioneering jam-grass act, but also one of the most innovative groups in live music —something the group has proudly held high for the better part of a quarter-century.  

From selling out Red Rocks Amphitheatre at a time when that was unheard of for a string act, to standing at the microphone in front of tens of thousands at festivals like Bonnaroo, Yonder Mountain was the initial spark in an acoustic inferno decades ago that endures headlong into the 21st century — one burning brightly in an ongoing tidal wave movement that now includes marquee names like Billy Strings, Greensky Bluegrass, and The Infamous Stringdusters.