FOR BEACH BARS - At their best, beach bars provide the soundtrack of summer with live bands revving it up after the skies have gone dark. The Wellfleet Beachcomber Bar (508-349-6055, thebeachcomber.com) sits high above Cahoon Hollow Beach in Wellfleet and is known for programming alt rock, ska, and reggae, and even has the classic sounds of surf-rock legend Dick Dale in July. Hungry before the shows? Order oyster shooters or lobster in the rough. Down in Old Lyme, Connecticut, the Pavilion Beach Bar (860-434-8405, pavilionbeachbar.com) at Sound View Beach tears it up with the likes of the heavy-metal cover band Darik and the Funbags and the acoustic groove style of Jamies Junk Show.