"Born Free" will be Rock's first album since "Rock N Roll Jesus" in 2007, The Detroit News noted.
Rock said the collaboration with Seger -- on the piano -- almost didn't happen.
"I asked him to be on the track and he didn't call me back," Rock said. "I started getting really nervous, and then a couple days later he showed up at the studio, by himself. I said, 'Bob, why didn't you call? I didn't think you were going to do it!' He said, 'I was practicing.'"
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