Conversation so far:
Tell me something about Harry Nilsson's legacy?
Nilsson is the subject of a 2006 documentary, Who Is Harry Nilsson (And Why Is Everybody Talkin' About Him)?
Who produced the documentarty Who Is Harry Nilsson (And Why Is Everybody Talkin' About Him)?
The documentary was produced by David Leaf and John Schienfeld.
What was the documentary Who is Harry Nilsson (And Why Is Everybody Talkin' About Him)? about?
Who is Harry Nilsson (And Why Is Everybody Talkin' About Him)? is a documentary about the American musician Harry Nilsson.
Does the article mention any music released by Harry Nilsson?
In 1964, Nilsson worked with Phil Spector, writing three songs with him.

Question: Were they ever released?
Self-contained rewrite: Were the three songs Harry Nilsson and Phil Spector worked on ever released?