It wasn’t that the Wallflowers were particularly physical performers. If anything, they remained as immobile on stage as Blues Traveler. However, their songs had variety and veered in tempo, and singer-guitarist-songwriter Jakob Dylan’s passionate delivery made each song spring to life. The Wallflowers are having their first taste of commercial success, thanks to their haunting hit single, “6th Avenue Heartache.” Their hourlong set included most of the songs on their latest album, “Bringing Down the Horse,” as well as a rocking cover of “Tears of a Clown.”