Slaves And Masters  by Deep Purple

The 1990 album Slaves And Masters is one of the most unique and controversial moments in the history of Deep Purple, mainly due to the participation of Joe Lynn Turner on vocals. This is because it moves in the realm of AOR (Adult Oriented Rock) and melodic Hard Rock, departing from the classic blues-rock style of the band. While Ritchie Blackmore considered it his favorite album from the reunion period (1984-1993), Jon Lord and Roger Glover later expressed reservations about whether the album should even bear the name of Deep Purple.

The title has no socio-political content. It derives from recording studio terminology, where one tape recorder is called "Master" and the other "Slave." Many fans and critics called the album Deep Rainbow, as the lineup (Blackmore, Glover, Turner) directly referred to the 1980s Rainbow.

Commercially, Slaves And Masters fell short of expectations, reaching only No. 87 on the Billboard 200, although the subsequent tour was successful, especially in Europe.