It was Carhartt jackets as far as the eye could see at the Bottleneck on Monday night. After a snowed-in weekend, music fans were eager to finally get out and packed the venue for some summer festival vibes with Mountain Grass Unit. The band, a big name in the bluegrass scene, is on a massive tour through August. This was the type of show where there wasn’t even an opener, just hours of solid bluegrass from the band. Photos from the night below.