"Untitled with Bob Rock" is a placeholder title for a few unreleased songs by American recording artist Britney Spears, intended for her fifth studio album, Blackout.
Background[]
While spending time in Maui, Spears began working on new music with Metallica producer Bob Rock, who is based in Hawaii. Together they started early sessions for what was expected to become her next studio album. The project was scheduled for release in November.[1][2]