From the beginning, high school pals Amy Ray and fellow Indigo Girl Emily Saliers have had divergent musical tastes. Ray’s always been the rock ‘n’ roll half of the duo, as evidenced on her 2001 solo debut, Stag, which featured the Butchies on five tracks and an unabashed punk spirit. The loud guitars, crunchy riffs and old-fashioned Replacements vibe help this sometimes overweening “message-rock” go down just fine on her new follow-up, Prom. Ray plays Cat’s Cradle on Wednesday, April 13 at 9 p.m. Tickets are $12 in advance and $14 day of.