It's made out of open-source. Their contribution is to integrate it into a web service. http://chordify.net/pages/about/ http://chordify.net/pages/about/ htt

It's made out of open-source. Their contribution is to integrate it into a web service. http://chordify.net/pages/about/ http://chordify.net/pages/about/ http://www.vamp-plugins.org/develop.html http://www.vamp-plugins.org/develop.html