There is more than one band with this name: 1) The most well-known and recognized Pentagram, from Arlington, Virginia, United States of America, is one of the earliest bands around. Having been around in one form or another since 1971, it's safe to say that Pentagram had a big impact on Sabbath inspired that was to follow over the next decade. The band also strongly intertwines with the band and is sometimes seen as one and the same. Pentagram are considered to be one of the all time classics by many older fans for understandable reasons.
Their music can.