Cutting-edge progressive bluegrass group, led by one of the world’s premier contemporary mandolinists, plays a combination of complex original instrumental music and vocal repertoire spanning trad bluegrass to unlikely pop covers at the Camden Opera House, 29 Elm St. Improvisation and the ensemble interplay are at the forefront! Opener singer-songwriter Anna May blends folk, jazz and classical influences. Choose-your-own reserved seat tickets are $20 in advance at camdenoperahouse.com, $24 day-of-show. Sponsored by Camden Maine Stay Inn and 40 Paper.