This website, to be precise!

Thanks to Itch.io hosting games, now you can play Crescendo right here in your browser!

https://dancingoutintospace.itch.io/crescendo-web-version

The other version is on my page anyway, but here's a link for easy access. ^w^

It also works on tablets, which cuts out the need for Android and Apple formatting, and I'm glad about that because I managed to get Android working in the past, but Apple remains a mystery to me. 

But... just because it works on tablets, does not mean it's ideal to play.

Crescendo was made for computers, and I'll be honest, it formats horribly on tablets and phones.
For the best performance, you should play it on something with a big screen and a physical keyboard. ^w^