Adolphe Sax
The extended range (altissimo register) was highly controversial throughout the middle of the 20th century, and Raschèr stirred the controversy among the classical saxophone community by insisting that the instrument's inventor, Adolphe Sax, had intended the instrument to be played in this manner. Raschèr cited evidence that Sax had demonstrated a three-octave range (up to a high C) to composers in the 1840s.