Oy! I stand corrected; from Wiki:
QUOTE
The song "Memphis Skyline" is a tribute to the late singer Jeff Buckley, who drowned in Memphis in the Wolf River, a tributary of the Mississippi, on May 29, 1997. The song references "Hallelujah," a Leonard Cohen song which Buckley notably covered, and which Wainwright later did likewise.
So it went Cohen, Buckley, Wainwright, Arooj Aftab, etc. (Lord knows how many times this song has been covered.) I heard about the Wainwright-was-first thing from a big fan of Wainwright, so I posted it. Perdon, he came after Buckley.