Hunterdon-raised twin sibling duo Nalani & Sarina are pictured in downtown Somerville. They kick off their first national tour on Sept. 4 in Knoxville, Tenn., and can be seen locally Sept. 8 at Hub City Sounds: ROCK New Brunswick; Sept. 20, The Bitter End, New York City; Oct. 6, Asbury Lanes, Asbury Park, and Oct. 8, Raritan Valley Community College, Branchburg.