- Works best on Chrome for Windows/Linux
- Piano audio: http://theremin.music.uiowa.edu/MISpiano.html
- http://teropa.info/blog/2015/09/10/full-stack-redux-tutorial.html
- https://scotch.io/tutorials/authenticate-a-node-js-api-with-json-web-tokens#set-up-our-node-application-packagejson
- http://slatepeak.com/guides/building-a-software-as-a-service-saas-startup-pt-2/