This has to be one of the best soundchecks of all time! Watch Prince and the New Power Generation performing a soundcheck at the Metrodome in Minneapolis, on July 19, 1991 ahead of their show at the opening ceremony of the 1991 Special Olympics.
Prince takes the stage at 1:50, and starts playing guitar at 2:44. At 3:15 he says, "Dearly beloved, we are gathered here today to get through this thing called soundcheck."
The soundcheck is terrific—it's like watching a mini version of the entire show. If you're a Prince fan, you should definitely check it out!
This eleven-minute clip is from the Diamonds and Pearls Super Deluxe Edition, available on the Prince website, which describes the Blu-ray: "three hours of video, comprising the previously unreleased Live at Glam Slam (01/11/92), Special Olympics Concert (07/20/91) and Special Olympics Soundcheck (07/19/91), plus the restored Diamonds And Pearls Video Collection (1993)."