Fundamental is the sixteenth album, the ninth of entirely new music, by the British band Pet Shop Boys. It was released in May 2006 in the United Kingdom, Europe, Japan, and Canada, and was released in late June 2006 in the United States. The album entered the UK Albums Chart at number five on 28 May 2006 (see 2006 in British music).
The album was produced by the Pet Shop Boys and Trevor Horn and it features eleven new Pet Shop Boys compositions, and "Numb," written by Diane Warren (Neil Tennant and Chris Lowe originally planned to have "Numb" be one of two new tracks on PopArt, but opted instead for "Miracles" and "Flamboyant").
The liner notes shows that the album is dedicated to two executed Iranian teenagers, Mahmoud Asgari and Ayaz Marhoni, who were hanged on July 19, 2005 for engaging in homosexual behavior.