They're leaders of a new generation of songwriters who honour the genre's history while pushing its boundaries, too - musicians who treat bluegrass not as a tradition, but as a living, breathing language. That language evolves and expands with Appalachian Smoke , an album that combines the live- wire energy of the band's concerts with the bold, wide-open exploration of the recording studio. Produced by six- time Grammy winner Vance Powell , Appalachian Smoke came together during a whirlwind era that found Mountain Grass Unit hitting the highway, transforming their grassroots audience into a national following. For years, they'd squeeze their concerts into the narrow margins of long weekends and summertime breaks. When college graduation spilled the musicians out into the real world in 2025, Mountain Grass Unit committed fully to the road, selling out more than 30 shows that year and winning the International Bluegrass Music Association's Momentum Artist of the Year award.