Jack Blades with the band Rubicon in the late 70s. Some funky bass work including a bass solo.
Rubicon - That's The Way Things Are - YouTube
Rubicon was formed in San Francisco by Jerry Martini, who was an original member of Sly & the Family Stone. Other members of the group included Greg Eckler (vocals, drums), Brad Gillis (guitar), Max Haskett (lead vocals, horns), Dennis Marcellino (sax, vocals), Jim Pugh (keyboards) and Jack Blades (bass). They released two albums before disbanding. Brad Gillis and Jack Blades went on to form Night Ranger, which would go on to great success in its own right.