NEW. Valleys Of Neptune - Jimi Hendrix. "Valleys of Neptune" is a posthumous eleventh studio album by Jimi Hendrix. Released in the United States on March 9, 2010, the album boasts 12 previously unreleased studio recordings, including the title track, one of the most sought after of all of Hendrix's commercially unavailable recordings. The tracks on "Valleys of Neptune" were largely self-produced by Hendrix and recorded mostly in 1969 following the release of "Electric Ladyland." The album predominantly features the original lineup of The Jimi Hendrix Experience: Hendrix, bassist Noel Redding and drummer Mitch Mitchell. Format: LP. Genre: Classic Rock.