Emo rockers The Maine invade Pittsburgh’s Altar Bar on Thursday, April 30, at 7 p.m. Tickets for the all-ages show — which includes Real Friends, Knuckle Puck and The Technicolors —are $20 in advance and $22 at the door. Altar Bar is located at 1620 Penn Ave. in the city’s Strip District. Call 412-206-9719 or visit http://www.thealtarbar.com for more information.