The Eternal Idol is the thirteenth studio album by the English heavy metal band Black Sabbath, released in November 1987, through Vertigo Records in the UK, and on 8 December 1987, through Warner Bros. Records in the US. It is the first Black Sabbath album to feature vocalist Tony Martin, and the final album to be released through Warner Bros. and Vertigo Records, until the release of 13 in 2013.