These 3 young Newcastle musicians (brothers John and Mark Gallagher, and Rob "Wacko" Hunter) make it clear in the album cover photo of Raven buried in their own equipment. It's a telltale story of what you will hear in the music: killer metal filled with amazing riffs and solos, outstanding crazy vocals and fast double bass drum rhythms, a style never before attempted by any other band.
Sarofeen's vocal style has been compared to Janis Joplin, Ellen McIllwaine, & the Shocking Blue's (recently deceased) Mariska Veres, and if you like those vocalists you should give her a chance.
Although it was optimistically titled Volume One, this would turn out to be the sole album by this obscure, odd, Edinburgh early heavy rock trio. The tracks are dominated by the Jimi Hendrix/Cream-influenced guitar of Gillies Buchan, which leans heavily on devious wah-wah effects. Indebted to blues-rock and early heavy metal, but not quite in either bag, the sound is somewhat skeletal even as power trios go.
Fronted by San Franciscan poet David Meltzer, the Serpent Power was a sunshiny folk-rock group, whose songs were musical translations of Meltzer's poetry. They were first noticed by Ed Denton, manager of Country Joe and the Fish, when he saw them perform at their first-ever gig, a benefit for the Telegraph Neighborhood Center. This was in November of 1966 -- Denton recommended them to Vanguard Records (Country Joe's label) and by 1967 the band was signed and had released their first and only album.