"Paranoid" is a song by which rock band?

"Paranoid" is a song by English rock band Black Sabbath, released in 1970 off the band's second studio album, "Paranoid" (1970). It is the first single from the album, while the B-side is the song "The Wizard". The song is widely regarded as one of the greatest heavy metal songs of all time. It reached number 4 on the UK singles chart and number 61 on the US "Billboard" Hot 100.

"Paranoid" was the first Black Sabbath single release, coming six months after their self-titled debut was released. "Cash Box" described the song as being "as dense, musically as 'Whole Lotta Love'"" stating that "crashing, non-stop beat with gobs of bass and drums laced liberally with stinging, echoey vocals and hot guitar licks move the song along at a blistering pace".

Black Sabbath are an English rock band formed in Birmingham in 1968 by guitarist Tony Iommi, drummer Bill Ward, bassist Geezer Butler, and vocalist Ozzy Osbourne. They are often cited as pioneers of heavy metal music. Throughout the 1980s and 1990s, the band underwent multiple line-up changes, with Iommi being the only constant member throughout its history.