The album includes covers of Sunshine of Your Love by Cream and Bleeding Heart by Elmore James apart from original tracks Lullaby of Summer and Red House
The earliest song on the album, Mr Bad Luck, was recorded in 1967. "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," the Telegraph quoted Janie Hendrix, the guitarist''s sister and manager of is estate, as saying. She added: "His brilliance shines through on every one of these precious tracks." The album is scheduled to release on March 8, marking the 40th anniversary year of Hendrix''s death.