Professor Louie and the Crowmatix, Grammy nominees and New York Blues Hall of Famers, will perform at the Opera House at Boothbay Harbor, 86 Townsend Avenue, on Friday, July 19, at 7:30; doors open at 7 p.m. The group will be in town to celebrate the 50th anniversary of Woodstock and will be joined by the Woodstock Horns. Their repertoire is steeped in rock ’n’ roll, blues, gospel and American roots music. They got their start in Woodstock as the studio backing band for The Band. Advance tickets are $25 at the box office, or call 633-5159. Regular tickets are $30 at 

and at the theater on the day of the performance.