The Web - Blues for two T's (1970) 

The Web began as a jazz/blues band, with a style simultaneously related to America's West Coast groove and UK's proto-prog movement. Hailing from the British psychedelic scene, their style is often described as atmospheric, moody, melancholy, and dark. The powerful presence of African-American singer John L. Watson and two guitarists provided a tight muscle to the band's sound, reflected in the first two studio efforts "Fully Interlocking" (1968) and "Theraposa Blondi" (1970).[1] Watson left The Web and was replaced by Dave Lawson who gave the band a different sound on their third LP I Spider.