Alphonse Heinrich
1868 — 1935
Heinrich Schenker was an Austrian music theorist whose writings have had a profound influence on subsequent musical analysis. His approach, now termed Schenkerian analysis, was most fully explained in a three-volume series, Neue musikalische Theorien und Phantasien, which included Harmony (1906), Counterpoint, and Free Composition (1935).
Adapted from the Wikipedia article on Heinrich Schenker.