Harry Nilsson spent almost all of his rich, idiosyncratic, sometimes maddening career at RCA Records, releasing his bravura debut, Pandemonium Shadow Show, in 1967 and fading into the sunset with 1977's Knnillssonn. During those ten years, he released 14 albums and left behind a bunch of stray tracks, almost all of which are gathered on Legacy's massive and wonderful 2013 box The RCA Albums Collection…