• Dutch street organ: mechanical music machine, powered by cranking wheel, now belt-driven. • Operates via perforated cardboard punch cards, triggering valves for pipes, percussion, animatronics. • Self-contained, mobile; plays until card ends, can perform classics to pop hits. • Air pressure supplied by bellows, historically cranked by lowest-ranked staff, now electric motor. • Music arrangement requires timing: immediate vs delayed instrument triggers, skillful punching needed. • Video tour showcases engineering marvel, with performances of Bee Gees, Daft Punk, Queen.
Sources: