The Dark side of the moon was released  in March 1973 and was in the charts for 13 years never out of the top 200

The Wall was released on November 1979 and went straight to number 1 and was the soundtrack to The Wall Movie.

A Momentary lapse of reason September 1987 and was the first album in which David Gilmore took control of the band after Roger Waters left in 1983.

A Delicate sound of thunder was released to    accommodate the Momentary lapse of reason World Tour and was the first without Roger    Waters.