Whose 1974 hit "Piano Man" was based on his time playing in a Los Angeles piano bar?

Who became King of Sweden in 1973? In which 1973 film is Steve McQueen unjustly sent to Devil's Island, where he plots his escape? Which 1973 film was advertised with the tagline "Where were you in '62?" Which Fort Lauderdale-born tennis star won 18 Grand Slam singles titles? Complete the title of Mel Brooks's 1974 western spoof: "___ Saddles". Complete the title of Arthur C. Clarke's 1973 novel: "___ with Rama". Who, with the middle name Aldrich, served as U.S. Vice President from 1974 to 1977? Bart, Lili von Shtupp and Governor William J. Le Petomane are characters in which 1974 film?