Here is a shared video of Michael performing Dangerous in Basel, Switzerland on July 25, 1997 for the last Switzerland gig of the HIStory Tour. As we may have discovered, MJ Beats dubbed this with an unprecedented a capella for the simple rationale of LaVelle's Dangerous 25 video, and his inferences regarding reactions, so that's why it sounds really similar to the MJ And Friends 1999 version. (UPDATED) Today, they released the video with the original audio. Many thanks to MJ Beats!
Vimeo: https://vimeo.com/michaeljacksoncontent
DailyMotion: http://www.dailymotion.com/MichaelJacksonContent
I don't own ANY content in this video. Credit goes to the respective owners.