History of Music Machines. New York: Drake Publishers, 1975. External links Argentinian Barrel Organ Museum - Official website Museum of Musical Instruments in Netherlands: "From musical clock to street organ" A 1790 John Langshaw Chamber Barrel Organ An Open Source Virtual Barrel Organ Player Software Project about mechanical music machines in Czech Republic Recordings of historical barrel organs The Magic of the Barrel Organ SAYDISC with categories about "Mechanical" Music and "Musical Boxes" Mechanical Music from Phonogrammarchiv of the Austrian Academy of Sciences Pipe organ Street performance Mechanical musical instruments French inventions French musical instruments Culture in Strasbourg