Wherever multi-instrumentalist and singer Gabby La La goes, so goes the shadow of Les Claypool. The Primus frontman has produced her records, invited her to join his touring band and played with her on numerous live dates. So when the flyers for Gabby La La’s record release party this weekend promise “**PLUS SPECIAL GUESTS!**,” one can only assume that it means Claypool is sitting in on bass. (Caveat: We don’t know this for sure.) The very talented Odd Bird and Forrest Day open the show on Friday, Feb. 18, at the Mystic Theatre. 21 Petaluma Blvd. N., Petaluma. 8pm. $13–$16. 707.765.2121.