Please note that there might be some confusion with the names. "Spyro Gyra" is a well-known jazz fusion band, whereas "Spirogyra" is a British folk/prog band from the 70s. Based on the albums you've mentioned, I assume you are referring to Spirogyra. Here is the bio:

Spirogyra was an English folk-progressive rock band formed in the early 1970s, known for their distinctive and eclectic blend of folk music with progressive rock elements. Originating from Canterbury, Kent, the group was founded by singer-songwriter Martin Cockerham and vocalist Barbara Gaskin while they were both students. The band's lineup was fluid, with other main members including Mark Francis, Steve Borrill, and Julian Cusack. Their music is characterized by poetic lyrics, Cockerham's idiosyncratic guitar playing, and Gaskin's haunting vocals.

The band released their debut album "St. Radigunds" in 1971, named after the street in Canterbury where they lived. Followed by "Old Boot Wine" in 1972 and "Bells, Boots and Shambles" in 1973, these albums encapsulate the era's spirit with their adventurous and unconventional sounds. Although Spirogyra never attained mainstream success, they developed a loyal cult following and are remembered for their unique contribution to the British folk scene. Their music continues to be celebrated for its creativity and the way it captured the zeitgeist of the English counterculture of the early '70s.