Former Whiskeytown frontman Ryan Adams is in a Hollywood studio finishing up his second solo release, a double-album titled Gold, Rolling Stone reports. Ethan Johns, son of legendary producer Glyn Johns (Rolling Stones, The Who), is at the helm of the project, due late this summer on Mercury's new Lost Highway imprint. Counting Crows singer Adam Duritz, gospel singer CeCe Winans, renowned drummer Jim Keltner and Tom Petty & The Heartbreakers keyboardist Benmont Tench make guest appearances. Alanis Morissette also may sing on the album. Adams and Morissette recently wrote a song together, titled "1974," their shared birth year, but scheduling conflicts have kept them from recording together. Lost Highway will release Whiskeytown's third album, Pneumonia, on May 22. The album was recorded in 1999 before Adams departed the alt.country band for a solo career, but the Universal/Polygram merger stalled the album's release. A five-song Whiskeytown EP, Deserters, will be released later this year. Adams also told Rolling Stone that there are more than 60 Whiskeytown tracks in the can that he plans to release eventually through Lost Highway.