Blue Cheer was an American rock band formed in 1966 in San Francisco, California. Often cited as pioneers of heavy metal, they were known for their loud, aggressive sound that blended elements of blues rock, acid rock, and psychedelic rock. The original lineup featured bassist and vocalist Dickie Peterson, guitarist Leigh Stephens, and drummer Paul Whaley.

Their debut album, Vincebus Eruptum (1968), is frequently credited as one of the first heavy metal albums. The band’s cover of Eddie Cochran’s “Summertime Blues” from this album became a hit, reaching No. 14 on the Billboard Hot 100 chart. This track exemplified their raw and powerful style, characterized by heavy distortion and high volume.

Blue Cheer’s influence extended beyond heavy metal; they also impacted the development of punk rock, stoner rock, doom metal, and grunge. Their music was noted for its intensity and unrefined energy, setting a precedent for many bands that followed.

Despite lineup changes and periods of inactivity, Blue Cheer remained active in various forms until 2009. The band’s legacy is marked by their groundbreaking contributions to the evolution of hard rock and heavy metal music.