Despite being 29, married and a father of two young children, singer and songwriter Ben Kweller has the face of someone who's regularly subjected to carding at bars. Kweller has never let his interpreted youth get in the way of finding success, having appeared on “Late Night with Conan O'Brien” and the “Late Show with David Letterman” before reaching the age of 19 with his short-lived band Radish. Developing a solid solo career starting with his 2002 debut, “Sha Sha,” he has proven quite capable in delivering some well-mannered alt pop, making fans and collaborators out of the likes of Ben Folds, Guster and Death Cab for Cutie in the process. Delving into a more country-tinged aesthetic on his most recent album, “Changing Horses,” Kweller is scheduled to perform at the Camel on Sunday, Nov. 28, at 7 p.m. $20.