Tower of Power has been perfecting its unique style of groove music since 1968. Over the decades, nearly sixty different musicians have toured or recorded as part of the ten-piece soul outfit — a testament to the Oakland band’s enduring legacy. Its large, funky horn section is particularly renowned, having collaborated with The Grateful Dead, Elton John, Rod Stewart, Huey Lewis and the News, Phish, and Aerosmith. Today, four original members remain, and the band’s sound is as fresh as ever, in part due to new lead vocalist Ray Greene, who has a honeyed voice and a commanding presence. You can see the band this weekend at Yoshi’s (510 Embarcadero West, Oakland), where it’s in the midst of a five-day stint in advance of a tour with Journey and The Steve Miller Band later this year. Many shows are already sold out, but check website for ticket availability.