an Entity references as follows:
BBC Sessions is a compilation album featuring studio sessions and a live concert recorded by English rock group Led Zeppelin for the BBC. It was released on 11 November 1997, by Atlantic Records. Disc one consists of material from four different 1969 BBC sessions. Disc two contains most of the 1 April 1971 concert from the Paris Theatre in London. Disc three was only included in a limited run of album releases and features rare interviews from 1969, 1976/1977, and 1990.