Justin Roberts and the Not Ready Naptime Players

March 6 @ 10:30 am, 12:30 and 2:30 pm. Justin Roberts knows how to get a familial crowd on its feet. One of the all-stars of the indie family music scene, Roberts is rumored to excite his audience into “kiddie mosh pits” at nearly every show. He and his band, The Not Ready for Naptime Players, are on the road throughout the year, playing their whimsical and intelligent rock songs for their pint-sized fans. Jammin’ Java, 227 Maple Ave. E., Vienna; 703-255-1900; www.jamminjava.com; $15.