This is a demonstration how you can use Snap! to write polyphonic music.data:image/png;base64,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data:image/png;base64,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 be able to play polyphonic music we start all the individual notes at the same time in parallel. Each note has four parameters:, - a tone - a delay, - a duration, - an instrument. The programme plays a note with a certain tone after a given delay for the indicated time. Thus it is possible to compose music pieces with polyphonic melodies. For convenience the song "Bruder Jakob" was written in spreadsheet software and importet as CSV file60,0,1,262,1,1,264,2,1,260,3,1,260,4,1,262,5,1,264,6,1,260,7,1,264,8,1,265,9,1,267,10,2,264,12,1,265,13,1,267,14,2,267,16,0.5,269,16.5,0.5,267,17,0.5,265,17.5,0.5,264,18,1,260,19,1,267,20,0.5,269,20.5,0.5,267,21,0.5,265,21.5,0.5,264,22,1,260,23,1,260,24,1,255,25,1,260,26,2,260,28,1,255,29,1,260,30,2,260,8,1,162,9,1,164,10,1,160,11,1,160,12,1,162,13,1,164,14,1,160,15,1,164,16,1,165,17,1,167,18,2,164,20,1,165,21,1,167,22,2,167,24,0.5,169,24.5,0.5,167,25,0.5,165,25.5,0.5,164,26,1,160,27,1,167,28,0.5,169,28.5,0.5,167,29,0.5,165,29.5,0.5,164,30,1,160,31,1,160,32,1,155,33,1,160,34,2,160,36,1,155,37,1,160,38,2,160,16,1,362,17,1,364,18,1,360,19,1,360,20,1,362,21,1,364,22,1,360,23,1,364,24,1,365,25,1,367,26,2,364,28,1,365,29,1,367,30,2,367,32,0.5,369,32.5,0.5,367,33,0.5,365,33.5,0.5,364,34,1,360,35,1,367,36,0.5,369,36.5,0.5,367,37,0.5,365,37.5,0.5,364,38,1,360,39,1,360,40,1,355,41,1,360,42,2,360,44,1,355,45,1,360,46,2,360,24,1,462,25,1,464,26,1,460,27,1,460,28,1,462,29,1,464,30,1,460,31,1,464,32,1,465,33,1,467,34,2,464,36,1,465,37,1,467,38,2,467,40,0.5,469,40.5,0.5,467,41,0.5,465,41.5,0.5,464,42,1,460,43,1,467,44,0.5,469,44.5,0.5,467,45,0.5,465,45.5,0.5,464,46,1,460,47,1,460,48,1,455,49,1,460,50,2,460,52,1,455,53,1,460,54,2,4