Emmy award winner and multi-platinum artist Andy Grammer continues to engage, energize, and empower audiences with stomping stadium-size pop anthems meant to be shared at full volume. His observations and affirmations pick people back up when they need it, affirm their potential, and encourage them to keep going. He performs at Boarding House Park, 40 French St., Lowell, as part of the Lowell Summer Music Series. Tickets start at $45.