"Rock Around the Clock" played on the Apollonia Dance Organ

"Rock Around the Clock" played on the Apollonia Dance Organ, a massive free-standing band organ originally run by a punch-card program. The program has since been transferred to a MIDI unit to prevent the card and reader from wearing out. The video, alas, does not fully capture the sheer power of this vintage music machine in action. The instrument is part of the mechanical instrument collection at the Musical Instrument Museum in Phoenix, Arizona, USA.