Sleep is a legendary American heavy metal band that originated in San Jose, California. The band has been active since 1990 and is known for their unique blend of stoner rock and doom metal. Guitarist Matt Pike and bassist/vocalist Al Cisneros founded the band and have been the only constant members throughout its history.

Early Years and Breakup

Sleep released their debut album, Volume One, in 1991. And the band gained wider attention with their second album, Sleep’s Holy Mountain, in 1992. The album showcased the band’s ability to create a sound that was both heavy and hypnotic. However, conflict with their record company contributed to their breakup by the end of the decade.

In 1999, Sleep released their final album, Dopesmoker, which was originally intended to be released as a single song, but was ultimately split into six parts. After the band’s dissolution, they released the album which critics acclaimed as a doom metal and stoner metal classic.

Reunion and Comeback

In 2009, Sleep reunited and have played sporadic live dates internationally since then, with Neurosis drummer Jason Roeder replacing original member Chris Hakius. In 2018, the band surprised fans by releasing their comeback album, The Sciences, on Third Man Records, to further critical acclaim.

Musical Style

Heavy, distorted guitar riffs and Cisneros’ powerful bass and vocals characterize Sleep’s music. Critics often describe Sleep’s sound as a blend of stoner rock and doom metal, influenced by heavy metal bands such as Black Sabbath.


Sleep has had a significant influence on heavy metal and stoner rock music, with bands like Mastodon and High on Fire citing them as an influence. Critics have praised the band for their unique sound and heavy, hypnotic riffs, with some calling them the “ultimate stoner rock band.”


Overall, Sleep’s legacy as a heavy metal band continues to grow as new generations of fans discover their music. Their blend of stoner rock and doom metal has influenced countless bands and continues to inspire new musicians today. With their recent comeback album, The Sciences, the band has proven that they still have plenty of creative energy left, and fans are eager to see what they will do next.

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