OldFriends4Sale said:

Bambi82 said:

.

Of course his dad helped.. that completely slipped my mind.

...and we suddenly recognize the MUSIC
as his Father's -- the song he played on the piano the night before.
But it's Prince's now, stamped with his own signature.
He's bent at the waist, his back to the audience, alone with his
father's, and his, pain.

Father's Song is an unreleased song recorded on 29 October, 1983 at Prince's Kiowa Trail Home Studio, Chanhassen, MN, USA. It was included as the ninth track on a 7 November, 1983 configuration of Purple Rain. The song appears in the Purple Rain movie, where Prince's character "The Kid" plays the song on piano after discovering his father's sheet music for the song. The main melody was then included as a section in Computer Blue. The song itself, however, remains unreleased. - PrinceVault

Computer Blue:The song was composed by Prince & the Revolution, with credit to his father, John L. Nelson for the guitar solo based on an untitled piano piece by Nelson. Prince titled the piece "Father's Song" and recorded it on piano for the film, though on screen it was portrayed as being played by Prince's on-screen father, actor Clarence Williams III.

Thanks.. Yeah, I love that part on piano. If I would have thought more before I posted I would have remembered that being in there.