Roots of Uriah Heep

Cold Chisel are an Australian pub rock band, which formed in Adelaide in 1973 by mainstay members Ian Moss on guitar and vocals, Steve Prestwich on drums, Les Kaczmarek on bass and Don Walker on piano and keyboards. They were soon joined by Jimmy Barnes on lead vocals and, in 1975, Phil Small became their bass guitarist. The group disbanded in late 1983 but subsequently re-formed several times. Musicologist Ian McFarlane wrote that they became "one of Australia's best-loved groups" as well as "one of the best live bands", fusing "a combination of rockabilly, hard rock and rough-house soul'n'blues that was defiantly Australian in outlook."

Three Dog Night is an American rock band formed in Los Angeles in 1967, founded by vocalists Chuck Negron, Cory Wells, and Danny Hutton. This lineup was soon augmented by Jimmy Greenspoon (keyboards), Joe Schermie, Michael Allsup (guitar), and Floyd Sneed (drums). The band had 21 Billboard Hot 100 top 40 hits between 1969 and 1975, with three hitting number one. Three Dog Night recorded many songs written by outside songwriters, and they helped to introduce mainstream audiences to writers such as Harry Nilsson ("One"), Randy Newman, Paul Williams, Laura Nyro and Hoyt Axton.

Hard rock or heavy rock is a heavier subgenre of rock music typified by vocals and electric guitars that are aggressive and distorted relative to traditional rock music. Hard rock began in the mid-1960s with the garage, psychedelic, and blues rock movements. Some of the earliest hard rock music was produced by the Kinks, the Who, the Yardbirds, the Rolling Stones, Cream, Vanilla Fudge, and the Jimi Hendrix Experience. In the late 1960s, bands such as Blue Cheer, the Jeff Beck Group, Iron Butterfly, Led Zeppelin, Creedence Clearwater Revival, Golden Earring, Steppenwolf, Grand Funk Railroad, Free, and Deep Purple also produced hard rock.