nine recordings from a conglomerate of 1969 sessions, including "dazed and confused", "i can't quit you baby", "you shook me" and "sunshine woman" along with two versions of both "communication breakdown" and "what is and what should never be" (recorded two years apart) were released on 16 september 2016, comprising a third disc of the previously two-disc "bbc sessions" compilation. eight of the nine songs were previously unreleased, "white summer" was previously released in 1990 on the "led zeppelin boxed set" and the expanded 1993 reissue of "coda" from "the complete studio recordings" and "led zeppelin definitive collection" (2008) box sets. the lost march 1969 three-song session – by all accounts erased from its master tapes – appears on the disc sourced from a reputed am radio recording. this session contains the oft-bootlegged, boogieing blues rocker "sunshine woman," a track that zeppelin never formally released, and renditions of willie dixon's "i can't quit you baby" and "you shook me."