Songwriters Tim Bluhm and Jackie Greene are musical forces of nature in their own right, so it’s no surprise that their popular duo, Skinny Singers, formed five years back, was a hit. Both acclaimed artists have been busy of late—Bluhm with his band the Mother Hips, and Greene with his involvement in the recent incarnation of the Black Crowes—so the Skinny Singers have not been seen since 2012. Now Bluhm and Greene team up once again for an intimate acoustic concert that’s sure to sell out. The singers get skinny on Wednesday, Dec. 30, at Terrapin Crossroads, 100 Yacht Club Drive, San Rafael. 8pm. $30 (limited number of tickets available at the door). 415.524.2773.