The music development analysis device (1) includes a comparison target sound detection unit (34) that detects a sound generation position from a music data (4) using a predetermined instrument sound as a comparison target sound, and a comparison section having a predetermined length in the music data. Are set, at least two pronunciation patterns of the comparison target sounds in the comparison section are compared, and a pronunciation pattern comparison unit (35) that detects the similarity in the comparison section, and the development change point of the music data is determined based on the similarity A development change point determination unit (36).
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