No Turning Back is an album in a style of music with roots in blues rock and psychedelic/acid rock, that developed where?
Heavy metal music Heavy metal (or simply metal) is a genre of rock music that developed in the late 1960s and early 1970s, largely in the United Kingdom. With roots in blues rock and psychedelic/acid rock, the bands that created heavy metal developed a thick, massive sound, characterized by highly amplified distortion, extended guitar solos, emphatic beats, and overall loudness. Heavy metal lyrics and performance styles are sometimes associated with aggression and machismo.
Arena rock Arena rock (known additionally by various names such as "AOR" or "album-oriented rock", "anthem rock", "corporate rock", "dad rock", "melodic rock", "pomp rock", and "stadium rock" ) is a style of rock music that originated in the mid-1970s. As hard rock bands and those playing a softer yet strident kind of pop rock became increasingly popular, groups creating material inherently designed for large audiences, arena rock developed from their use of more commercially oriented and radio-friendly sounds. The often highly-produced music, including both upbeat, dramatic songs and slower power ballads, features strong emphasis on melody and frequently employs anthemic choruses. Other major characteristics include prominent guitar effects and the use of keyboard instruments.