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 tone, typically in the bass range, during which at least one foreign (i.e., dissonant) harmony is sounded in the other parts. According to Robert Walser, heavy metal harmonic relationships are "often quite complex" and the harmonic analysis done by metal players and teachers is "often very sophisticated". In the study of heavy metal chord structures, it has been concluded that "heavy metal music has proved to be far more complicated" than other music researchers had realized. Robert Walser stated that, alongside blues and R&B, the "assemblage of disparate musical styles known ... as 'classical music has been a major influence