There have been more than 60 musicians in Tower of Power over the band’s 44-year history, but the group is still led by founder Emilio Castillo, who anchors the incredible horn section: one of the best, and certainly funkiest, of all time. The band will play eight shows over four nights, and showcase new vocalist Ray Greene. Jazz Alley. 7:30 & 9:30 p.m. through Feb. 9. $44.50. DAVE LAKE

Though one of the newer bands on the heavy-music scene, Seattle’s Witch Ripper has already received a fair amount of attention, and for good reason. It absolutely crushes live, playing a blend of High on Fire- and Mastodon-influenced metal. Keep an eye on this band, as it gets better and better with each set. With Sailor Mouth, Gladiators Eat Fire, Skies Below. Sunset Tavern. 9 p.m. $6 adv. 21 and over. JB

With just a hint of twang, Americana singer Joy Mills (formerly of the Starlings) brings a bit of Southern sweetness to the Northwest. As the Joy Mills Band’s frontwoman, she released Trick of the Eye, a collection of songs with a lot of down-home soul, in 2012. She’s playing solo tonight, but a new Joy Mills Band record is in the works. With the Believers. Treehouse Cafe. 8 p.m. $12–$16. 21 and over. ACP