Much-improved Dogstar rocks at free concert

A couple of words about Dogstar. No, Keanu Reeves doesn’t sing. And yes, the band can play. At a free, 45-minute concert at the House of Blues Monday night, the three-man group rocked hard onstage, lending a punky edge to the material. Much of Dogstar’s set list was culled from “Happy Ending,” its newly released U.S. debut album.