A new take on a favorite childhood pastime is allowing even complete strangers to make beautiful music together in downtown Montreal. Each spring, 21 multicolored swings are placed in the city's entertainment district, Quartier des Spectacles. Each seat acts as a musical instrument. As people swing, prerecorded sounds from pianos and other instruments fill the air. The more neighboring swings work together, the more melodies and harmonies begin to form. Watch this video and experience a new type of "swing music."