Cold Blood is a long-standing soul-rock-jazz band founded by Larry Field in 1968 and originally based in the San Francisco East Bay area. They have also gone by the name Lydia Pense and Cold Blood due to the popularity of their lead singer, Lydia Pense.
The band first came to prominence in 1969 when rock impresario Bill Graham signed them after an audition and they played the Fillmore West in San Francisco. Pense has been compared to Janis Joplin, and it was Joplin who recommended the audition to Graham.
The band has often been compared to another long-standing popular Northern California group, Tower of Power, and like Tower of Power they were rare in that they featured a horn section in addition to guitar, bass and drums. The Tower of Power horn players have performed with Cold Blood on a regular basis since the early 1970s. Skip Mesquite and Mic Gillette have been members of both Tower Of Power and Cold Blood.Their fan base also overlaps with the Sons of Champlin, although their musical styles are quite different.