[待更新] The Piano Guys have quickly become an international sensation by way of their immensely successful self-made music videos. Their uniquely unprecedented sound mixing pop and classical music conveyed through stunning cinematography has them consistently atop iTunes and YouTube charts alike. If you've seen a piano on a cliff or a train or a cellist jumping out of a plane then you've seen The Piano Guys!took a lot of guts to ask pic.twitter.com/bMkN3pKVFB Yesterday from ThePianoGuys's Twitter via Cam...