A hemiola is a rhythmic device that involves superimposing 2 notes in the time of 3 – there are 2 types you will come across – horizontal hemiola and vertical hemiola. Horizontal Hemiola A horizontal hemiola occurs in a piece written in triple time where the music is suddenly changed to “feel” like it has altered from triple time (counting in 3’s) to duple time (counting in 2’s) without any alteration of the time signature. Here is a short phrase written in triple time: Triple Time Example You can see and hear how the beats are counted in three’s. However,

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