Led Zeppelin: Jimmy Page reveals archive song finds
23 April 2014 Last updated at 08:00 BST
Legendary rock group Led Zeppelin have released two previously unheard recordings ahead of the reissue of the band's first three albums in June.
The guitarist Jimmy Page told the BBC's Rebecca Jones that the recordings were kept on reference tapes he "took home during the recording process".
The two tracks - blues classic Keys to Highway, recorded in 1970, and an early version of famous hit, Whole Lotta Love - are among dozens of tracks which the band will officially release alongside the reissues.