Jump Up! (1982) was Elton John's first full LP to have been recorded in the 1980s, and is best remembered for including "Empty Garden (Hey Hey Johnny)," John and lyricist Bernie Taupin's tribute to the their slain friend John Lennon. While the pair had been writing together again, albeit infrequently, since the late '70s, John continued to include material written with his primary non-Taupin collaborator, Gary Osborne…