A song David Bowie wrote for Frank Sinatra has been unearthed for a new TV documentary. The late rock icon's version of My Way, which was rejected by Sinatra, was recorded by Bowie in 1968. It's one of the rarities which will feature in new BBC4 documentary series The People's History of Pop. Sinatra eventually chose to record Paul Anka's version of the classic over Bowie's.