The 2010 Jimi Hendrix Catalog Project launches on Tuesday, March 9, with the release of Valleys of Neptune, a newly curated album of 12 fully realized studio recordings. The collector’s item contains more than 60 minutes of music never commercially available on a Jimi Hendrix album, from the artist Rolling Stone magazine called the greatest guitarist of all time.

Centered around tracks recorded during a pivotal and turbulent four-month period in 1969, Valleys of Neptune unveils the original Jimi Hendrix Experience's final studio recordings. Here the group lays down the foundation for its follow-up to Electric Ladyland, alongside the guitar superhero's first sessions with bassist Billy Cox, an old army buddy he'd recruited into his new ensemble.