Sign O' The Times Live was an awesome production and rates a 5! In my opinion there is no video concert that can match besides the Purple Rain Live concert video that for whatever reason had not been available on DVD.
In honor of the passing of Prince, this is a reconstruction of what would have been his final album with The Revolution, 1986’s Dream Factory, which eventually evolved into Sign o' The Times. Originally conceived as a double album with a significant amount of creative input from the band (at least compared to previous Prince releases), the album was scrapped after Prince broke up The Revolution in 1986. Prince then turned his attention to a solo concept album Camille, which was also scrapped and combined with the Dream Factory material to create the unreleased triple album Crystal Ball. Warner Bros Records then asked Prince to whittle the 3LP down, and the result was the double album Sign o' The Times, which many consider to be Prince’s masterpiece. This reconstruction attempts to present what Prince originally intended the Dream Factory album to sound like, volume-adjusted and using the best possible masters—EQd to match a virgin vinyl rip of Sign o’ The Times—to make the most natural-sounding album possible. Prince was truly the reigning star of the 1980s.
Armed with both worldwide smash hits, musical chops and the artistic credibility to back it up, Prince also had the vision and determination to prove himself a modern music legend But let's not forget he also had the band to back it up. Even though Prince was a great songwriter, producer and multi-instrumentalist who had the ability to mastermind his own works and retain both commercial and critical success, his output throughout the 1980s grew to allow more collaboration from his backing band he formed in 1979. The lineup of The Revolution seemed to be in flux at times, but after the transcendent success of Purple Rain in 1984 and their subsequent albums Around The World in a Day and Parade, the classic core of the band coalesced as guitarist Wendy Melvoin, keyboardist Lisa Coleman, keyboardist Matt Fink, bassist Brown Mark and drummer Bobby Z. In working on the follow-up to Parade before it was even released, Prince invited members of The Revolution—although mostly Melvoin and Coleman—to contribute backing vocals, songwriting, instrumentation and even lead vocals to the material. 
Reworking older songs as a starting point—the 1982 recordings of “Teacher, Teacher”, “Strange Relationship” and “I Could Never Take The Place of Your Man”—as well as the project's title track in December 1985, most of the work occurred in Prince’s newly built home studio on Galpin Boulevard. By April 1986, Prince had created a rough cut of an album called Dream Factory that elevated both Wendy and Lisa as major players (although they later claimed they didn’t receive the credit they thought they deserved!). At this point in time, Dream Factory was a single-disc album that included: “Visions”, “Dream Factory”, “It’s a Wonderful Day”, “The Ballad of Dorothy Parker”, “Big Tall Wall”, “And That Says What?” “Strange Relationship”, “Teacher, Teacher”, “Starfish and Coffee”, “A Place in Heaven” and “Sexual Suicide”. Work on the album continued throughout the summer with Prince often tracking all the instruments himself, although he also continued to work with Windy and Lisa in the studio. A mountain of tracks began to collect and by June a double album had emerged. Although songs such as “Big Tall Wall” and “That Says What” fell to the wayside, great and interesting new tracks such as “It”, “In A Large Room With No Light”, “Crystal Ball”, “Power Fantastic”, “Last Heart”, “Witness 4 The Prosecution”, “Movie Star” and “All My Dreams” were added to the running order as well as linking tracks “Wendy’s Interlude” and “nevaeH ni ecalP A”, the later based around “A Place In Heaven” played backwards and meant to introduce the title track.