<P> The concert was recorded by David Rivkin (a.k.a. David Z, brother of Bobby Z) using a mobile recording unit brought in from the Record Plant in New York City, staffed by engineers Dave Hewitt and Kooster McAllister . David Z's connection to Prince is deeper than most professional relationships . David's older brother, Cliff Rifkin was the regional promotion executive for Warners in Minneapolis, who also expedited Prince's label signing . David Z's younger brother, Bobby Z, would then become Prince's drummer in the Revolution . David Z wasn't surprised when he was requested to set up the live recording in August 3, 1983, "With Prince, you never knew," he says . "I thought we were recording a concert, but I wasn't sure if it was going to be a record, too . I knew they were working on the movie as, as well . You just had to go in prepared to record whatever it was going to be as well as you could ." The basic tracks for three songs were used on the Purple Rain soundtrack: "Purple Rain", "I Would Die 4 U", and "Baby I'm a Star". Prince performed overdubs while working at Sunset Sound in Los Angeles from August--September 1983 . A solo and verse from the original recording were edited out and replaced with a different verse, changing the length from eleven to eight minutes . The extra verse was about money, but was removed because it diluted the emotional impact of the song . </P> <P> After recording the song, Prince phoned Jonathan Cain from Journey to ask him to listen to it, as he was worried that it might be too similar to "Faithfully", a Journey single composed by Cain which had recently been in the charts . Cain reassured Prince by telling him that the songs only shared the same four chords . </P> <P> Prince explained the meaning of "Purple Rain" as follows: "When there's blood in the sky--red and blue = purple...purple rain pertains to the end of the world and being with the one you love and letting your faith / god guide you through the purple rain ." The phrase "purple rain" appeared in the lyrics of an earlier, 1972, song: Top Ten - charting "Ventura Highway" by America . That song was written by Dewey Bunnell . The title track of Prince's preceding album, 1999, included similar references to a doomed ending under a purple sky ("...could have sworn it was Judgment Day, the sky was all purple ..."). </P> <P> "Purple Rain" opens with a lone guitar quickly followed by live drumming and a prominent Yamaha CP70 Electric grand piano, evoking images of church gospel music . Three verses are each followed by a chorus, with a building emotional delivery . In the context of the film, each verse ties into a different strained relationship Prince's character has and his desire to reconcile . The song is dedicated to his ex-girlfriend Denise Matthews better known as Vanity (singer). After the final chorus, a guitar solo takes over the song . The song ends with a piano solo and orchestral strings . Prince's vocal range spans from the low note of F3 to the high note of A5 . </P>

What does purple rain mean in the song
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