Tracks recorded by Jimi Hendrix more than 40 years ago are to be released for the first time.
Many of the songs to feature on new release Valleys Of Neptune were recorded in London's Olympic Studios as well as New York's Record Plant in 1969.
Although many outtakes and sessions have circulated in Hendrix bootlegs over the years, this is the first time the Jimi Hendrix Experience recordings have been officially released and they have been mixed by Hendrix's studio sidekick Eddie Kramer.
The 60-plus minute album was mainly recorded in the months after the guitarist, who died in London in 1970 at the age of 27, released his Electric Ladyland album.
However one track, Mr Bad Luck, dates back to 1967 and was produced by the band's manager Chas Chandler, formerly of 1960s chart band The Animals.
Material on the 12-track release includes a cover of the Cream song Sunshine Of Your Love and Elmore James's Bleeding Heart, plus original tracks such as Lullaby Of Summer and Red House for which Hendrix himself acted as producer.
The guitarist's sister Janie Hendrix, CEO of Experience Hendrix which looks after his legacy, said: "My brother Jimi was at home in the studio. Valleys of Neptune offers deep insight into his mastery of the recording process and demonstrates the fact that he was as unparalleled a recording innovator as he was a guitarist.
"His brilliance shines through on every one of these precious tracks."
Most of the songs - to be released on March 8 - feature Hendrix's original Experience, the late British musicians Mitch Mitchell on drums and bass player Noel Redding. However, three feature Redding's replacement Billy Cox.