Loading time is ok for people who are expecting to land on an interactive page, but for people who are expecting to just go to a page otherwise its a bit crazy.

Additionally, I found myself scrolling to the next interactive instead of reading anything inbetween, I'm sure it will result in a good viral effect, but maybe ? not so much on conversions

maybe a call to action? "Music is fun, know what else is fun? investing with us ->" or something like that

I think you can reduce the size of the piano script a lot by using an Oscillator to generate the sounds instead of the hard-coded instrument samples.

Users are loving it. We're planning to post it on reddit to see how users react on this. But it'll be an amazing experiment to go with.