When an Australian man recorded his own fart to send to his brother, he inadvertently popped out a major seventh arpeggio in B flat, with a trill at the end. It could happen to anyone, really. Calling it his "Magnum Anus" and a "rectum opus", it was the number one You Tube video in the world for one day in May 2015. Cue a standing ovation from musical-fart aficionados everywhere.