Uriah Heep (band) so that's how we decided to shape it," Box recalled. Gerry Bron brought in session player Colin Wood, followed by Ken Hensley, a former colleague of Newton in the Gods, who was then playing guitar in Toe Fat. "I saw a lot of potential in the group to do something very different," remembered Hensley. Their 1970 debut album, "…Very 'Eavy …Very 'Umble" (released as "Uriah Heep" in the United States), introduced Hensley's heavy organ and guitar-driven sound, with David Byron's theatrical, dynamic vocals soaring above thunderous sonic backgrounds, although acoustic and jazz elements also featured in the mix. The album's
Heavy metal music of the sound. Deep Purple's Jon Lord played an overdriven Hammond organ. In 1970, John Paul Jones used a Moog synthesizer on "Led Zeppelin III"; by the 1990s, in "almost every subgenre of heavy metal" synthesizers were used. The electric guitar and the sonic power that it projects through amplification has historically been the key element in heavy metal. The heavy metal guitar sound comes from a combined use of high volumes and heavy distortion. For classic heavy metal guitar tone, guitarists maintain moderate levels gain at moderate levels, without excessive preamp or pedal distortion, to retain open spaces and