But actually it does not have anything to do with sound! It's about visualization.
I'm Kishz and I am new to this community. The reason I became aware of it's existence is because I had a question. Firstly, can't you just search for apps with words? Something similar like Google Play? If not, that pretty sucks. But, also it creates opportunities. I was searching for an app that visualized the music I am playing right now. The same concept as the following site will describe: http://www.soundspectrum.com/ . Sadly it does not support Spotify, but, if there were an app...
Thanks in advance for answers!