The original video was deleted. I think it was initially uploaded during the Spring of 2020, according to this Equestria Daily post: https://www.equestriadaily.com/2020/03/scootaloo-dashie-music-luckydragon-to.html 

I believe I found the original uploader, formerly LuckyDragonLand. https://www.youtube.com/c/TheLightLeavesThee/featured 
He made a video explaining the change, which you can watch here: "It's time for some changes." https://www.youtube.com/watch?v=x2siLmlxLys 

Artwork by TTTimon: https://www.deviantart.com/tttimon/art/You-ll-be-my-sister-494072736 

I was also going to reupload TOWARD NEW THINGS by FLIGHTRUSH. However, it has already been done: https://www.youtube.com/watch?v=L0TwBE9EYnM
Check it out; it's another song that should not be forgotten.