This has been one of my favourite songs for a long time, so might as well leave a review now.
If I had to pick an example of a remix to a classical piece that did everything right, this would be it. This takes Moonlight Sonata and adds it's own spin to it, transforming a sad and slow song into an energetic yet still tragic masterpiece. And not only that, this works marvelously as a standalone single piece too. It's just purely freaking amazing.
I love the parts of Beethoven's original that you added a techno spin to, and the original parts, especially the one at 2:03, are absolutely beautiful. I have genuinely never heard a remix quite as good as this one.
My only wish is that you had uploaded the shortened version used in osu! here instead of the album version. While both are an equal blast to listen to, the osu! version works better for rythm games like GD.
Nontheless, this is still an absolute 5/5, no questions asked. Pure masterpiece.