The summer of '75 I listened a lot to the band Spirit. I am not sure why. In the '70s I was even more into jazz than I am now, and I remain a huge fan. But, a friend turned me on to Spirit, a band described in enotes as

Beginning in one of the most fertile periods of American rock music, Spirit created some of the most memorable music of the past three decades, outlasting many pop music trends along the way. With its eclectic musical mix of rock, jazz, blues, and folk influences, Spirit was one of the premier West Coast rock bands to emerge during the late 60s. Although the band never reached superstar status, it has maintained a dedicated following. Spirit's musical activities came to a premature and tragic end with the accidental death of leader and guitarist Randy California in 1997.

One of the reasons they "never achieved superstar status" was a management decision to send them on a tour of radio stations instead of to play Woodstock.

Some clips from YouTube, listening to them I have '70s flashbacks:

Fresh Garbage one of their earliest songs, and Taurus

1984

Nature's Way

Mr. Skin

Spirit: The Video History, Part 1