Editing Musical instrument classification (section)

====Kurt Reinhard====
In 1960, German musicologist [[Kurt Reinhard (musicologist)|Kurt Reinhard]] presented a stylistic taxonomy, as opposed to a morphological one, with two divisions determined by either single or multiple voices playing.<ref name="Kartomi1990"/> Each of these two divisions was subdivided according to pitch changeability (not changeable, freely changeable, and changeable by fixed intervals), and also by tonal continuity (discontinuous (as the marimba and drums) and continuous (the friction instruments (including bowed) and the winds), making 12 categories. He also proposed classification according to whether they had dynamic tonal variability, a characteristic that separates whole eras (e.g., the baroque from the classical) as in the transition from the terraced dynamics of the harpsichord to the crescendo of the piano, grading by degree of absolute loudness, timbral spectra, tunability, and degree of resonance.