Mesmerized by this, but I think you need some kind of epilepsy warning.
Yup, I believe Kanye had a warning at the beginning of his video too.
Hahahahaha agreed. Thank the heavens he didn't use a rainbow spectrum.
Apologies for no response on how it was made, by the way. It was done using Web Audio API. I used a helper from WebAudioX called "Analyser2Volume".
How is it working with WebAudioX?