Quick, name three sure ways to spot a Northwest jam band before having heard them play. ... If you said a) their band photo was shot in the woods; b) Tommy Chong is their number one friend on MySpace; or c) the bass player often wears an oversized Seahawks jersey - you're right, and you just described Tacoma's DirtyChangePp. With University of Puget Sound roots, and having shaken booties everywhere from Teva approved stages to dives like Bob's Java Jive - here is a band with a head of steam and lungs full of weed smoke, which is just about all you can ask from a jam band. DirtyChangeUp delivers, even if the oneword name leaves something to be desired, and Tatupu actually probably hates the Grateful Dead. 

[The New Frontier Lounge, with TBA, 9 p.m., cover TBA, 301 E. 25th St., Tacoma, 253.572.4020]