Cat Power, 'You Are Free' (2003)
For her sixth album, 2003's You Are Free, Cat Power enlisted Dave Grohl to play drums on several tracks. "I'll never forget hearing her the first time," Grohl said of the singer in 2006. "My friend had a mixtape going in the van and 'Cross Bones Style' from the Moon Pix album came on. I turned it up and asked, 'Who the fuck is this?' I swear, nothing else mattered at that moment. Her voice was chilling. Her guitar was beautiful. Her words were so pure."