On this Day February 05, 1971
Origin of article http://www.thisdayinmusic.com/onthisday.php?factid=17237
started recording what would be their third album, ‘Master Of Reality’ at Island Studios in London, England. Released in July of this year, it is sometimes noted as the first stoner rock album. Guitarist Tony Iommi, decided to down tune his guitar down three semi-tones, Geezer Butler also down tuned his bass guitar to match Iommi. The result was a noticeably ‘darker’ sound that almost two decades later would prove hugely influential on at least three of the biggest grunge acts, namely Smashing Pumpkins, Soundgarden, and Nirvana.