What Does Per Arsin Et Thesin Mean?
In his influencial Abhandlung von der Fuge (1753), Friedrich Wilhelm Marpurg (1718–1795) uses the expression per arsin et thesin “to refer to the entrance of a theme (usually a fugue subject) with displaced accents, former strong beats becoming weak and vice versa” (Walker, Arsis, thesis). (Marpurg was a German author, music critic, music theorist and […]
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