Learn whole song? It will take Frankie a lot longer to learn the entire song.
Frankie can't learn every song, but try a bunch and see what he can play! Frankie recommends Nirvana "Come as You Are" for your first test.
Frankie's organ is an HTML5 web audio API based music synthesizer. It uses song metadata from echonest.com to attempt a recreation of the song. All processing is done in the browser. Source code for this website is available on github.