Heavy metal music styles in its early years, but by 1969 vocalist Ian Gillan and guitarist Ritchie Blackmore had led the band toward the developing heavy metal style. In 1970, Black Sabbath and Deep Purple scored major UK chart hits with "Paranoid" and "Black Night", respectively. That same year, two other British bands released debut albums in a heavy metal mode: Uriah Heep with "...Very 'Eavy ...Very 'Umble" and UFO with "UFO 1". Bloodrock released their self-titled debut album, containing a collection of heavy guitar riffs, gruff style vocals and sadistic and macabre lyrics. The influential Budgie brought the new metal sound into
Australian heavy metal Sydney in 1986. Solidifying its line-up by 1989 the group soon became an influence among both the local and foreign underground metal scenes for their chaotic death metal style and nihilistic behaviour. The worldwide success of Metallica and the explosion of the hair metal scene in the US in the late 1980s had raised the level of interest in heavy metal music in Australia by the early 1990s but for the most part it was still primarily an underground scene. A changing of the guard was also becoming evident. Mortal Sin had fizzled out after a US tour and while