4. "Slip Away"
At the turn of the millennium, Bowie decide to make an album that mixed a handful of new songs with re-recordings of his earliest tunes. His songs before Space Oddity never got much of an audience and he always felt they weren't produced properly. He called the album Toy and he basically finished it, though it was ultimately shelved in favor of Heathen. (It leaked on the Internet in 2011.) One of the few tracks to make the leap from Toy to Heathen was "Uncle Floyd," which he re-titled "Slip Away." It's a gut-wrenching tune about the passage of time, built around references to the 1970s children's show Uncle Floyd. It was a nightly highlight on the 2003/'04 Reality Tour.