An early, simpler, version of the unpronounceable symbol that Prince changed his name to during his dispute with Warner Bros. Records is painted on the side of Prince's motorcycle's gas tank. It also appears on a wall of the overpass Prince rides under during the "When Doves Cry" sequence.
The film's original screenplay, found on various websites, contained an extremely sexually explicit scene between Vanity and The Kid during the "ride of rage" sequence. It's unknown if the scene was actually filmed when Apollonia replaced Vanity as the leading lady. This adds to the mystery of a long rumored early edit of Purple Rain that was given an X-rating by the MPAA.
Albert Magnoli filmed a second love scene that was not included in the final cut of the film. This scene has special meaning because it contains the actual illusion of the purple rain. A snippet of this scene is included in the theatrical trailer for the film as well as the When Doves Cry montage. This scene, as well as the other deleted footage that led up to it, is also outlined in the film's screenplay found on various websites. It is rumored that this second love scene almost earned the film an X-rating although it's unclear as to whether this scene was actually included in early edits of the film or actually submitted to the MPAA. Director Albert Magnoli has stated that he never shot anything that could have given the movie a X-rating.
The success of this project benefitted just about every division of Warner Brothers. The box office grosses helped the film division, the soundtrack sales helped the record division, the home video release helped that division, and the promotional videos aired on MTV constantly helped the music video division.
'Purple Rain' was shopped around to numerous production companies including Indigo Films; which was owned by _Jim Brown (I)_ and Richard Pryor. Brown himself expressed his disappointment about not acquiring the project in the Spike Lee documentary Jim Brown: All American (2002).
Morris' pick-up lines to Apollonia (before the Revolution performs "The Beautiful Ones") are paraphrased lines from "Chili Sauce", the third track from the Time's third album "Ice Cream Castle". The album also contains "Jungle Love" and "The Bird", which are featured in this film. He also says, "What time is it," the title of the Time's second album.
Two takes of "The matter with this house..." sequence were filmed. According to the director's commentary, the film lab lost the camera negative for the scenes and had to use footage from a work print to include in the film. This explains the loss of picture quality during the scene.
According to the director's commentary, three versions of the love scene were filmed with three different ratings. A "G" rated version, "PG" rated version, and "R" rated version which is what was used in the film.
In the original script Prince takes Vanity to a barn and they make love which is seen during the When Doves Cry montage in the movie. In the scene Rain patters strongly against the barn. A deep thunder rolls. This is an obvious lyrical inspiration for the song "Raspberry Beret" by Prince. The song is found on his album "Around the World In A Day," which was released after "Purple Rain."
Although Albert Magnoli and William Blinn shared the writing credits, it is not known how much of Blinn's material was used. Albert Magnoli estimates that only two or three of Blinn's scenes are in the final cut of the film.