Interesting read from The Medium.
Article: Anil Dash
I Know Times Are Changing
But by the day of August 3rd, when the band was performing its final rehearsal preparation, Prince had realized the power of Fink’s melody. In practice just hours before the public show, the melody became a soaring vocal hook, evolving in the final performance into perhaps the most affecting part of the song, expressing all of the emotions too powerful for Prince to capture in a lyric. Like Journey’s earlier Faithfully, or U2’s later 80s anthems, it also provided a perfect stadium-ready sing-along line, again telegraphing Prince’s ambitions for the song while remaining true to the artistic intent of the piece.
Purple Rain is a particularly unusual song for the length of its instrumental coda. Before it fades to a series of striking and unexpected chords performed by the string ensemble, it has one last great hook, a simple piano motif performed by Lisa Coleman.