An archive of recordings by major stars including U2, Rod Stewart and Elvis Costello is to be released for the first time.
Music by U2 features in the archive of more than 600 tapes
The recordings, a mixture of live sets and studio sessions, were taped for Radio Clyde in Glasgow in the 1970s and 80s.
More than 600 recordings found by Scottish Radio Holdings (SRH) will now be released in a multi-million record deal with the Universal music group.
The archive, which features sets by acts including U2, Rod Stewart, Elvis Costello and Simple Minds, is thought to be the biggest outside of the BBC.
Their resurrection from the vaults of time will be eagerly anticipated
Universal's Nigel Haywood on the archive
The recordings were found when SRH was trying to locate some of its lost tapes.
"These totally unique recordings were usually only broadcast once or twice within a radio marketplace and then left to gather dust," said a company spokesman.
The recordings will be released with the blessing of the artists and their management.
SRH chief executive Richard Findlay said: "The artists we have been in touch with so far share our enthusiasm.
'Unknown to fans'
"With the support of Universal, whose labels represent a large part of the archive, we believe something of considerable importance can be created," he said.
The company has set up its own record label, River Records, which will release some of the music.
"In many cases, these recordings have been unknown to fans, music retailers and music lovers," said Nigel Haywood, Universal's UK commercial director.
"Consequently, their resurrection from the vaults of time will be eagerly anticipated."
The BBC has already released live recordings of some of the bands appearing on shows such as Radio 1's John Peel Show.
Groups such as The Pixies, Elastica, Teenage Fanclub, The Wedding Present and The Fall.
Many of these records have been released on the Strange Fruit label.