Heavy metal guitar (or simply metal guitar) is the use of highly-amplified electric guitar in heavy metal.[1] Heavy metal guitar playing is rooted in the guitar playing styles developed in 1960s-era blues rock and psychedelic rock, and folk harmonic traditions[2] and it uses a massive sound, characterized by highly amplified distortion, extended guitar solos and overall loudness. The electric guitar and the sonic power that it projects through amplification has historically been the key element in heavy metal.[3] The heavy metal guitar sound comes from a combined use of high volumes and heavy distortion.[4]
Heavy metal bands often have two electric guitarists, with one guitarist playing rhythm guitar and one guitarist playing lead guitar. The rhythm guitar player is part of the rhythm section of the band, along with the bass guitarist and the drummer. The lead guitarist plays guitar solos, instrumental melody lines and melodic fill passages. In power trios, which consist of a guitarist, bassist and drummer, with one or more members singing lead vocals, the single guitarist will switch between rhythm guitar and lead guitar roles as needed.