What is vibrato?
Carl Seashore, in his In Search of Beauty in Music, defines “good” vibrato as “a pulsation of pitch usually accompanied by synchronous pulsations of loudness and timbre, of such extent and rate as to give a pleasing flexibility, tenderness, and richness to the tone.”
Debate over saxophone vibrato
Saxophone vibrato is a controversial topic for several reasons. In fact, some have questioned whether vibrato should be used at all. Paul Berler, in a 1996 Saxophone Journal article, notes that wind instrumentalists have only made serious study of vibrato in the last century. Robert Luckey points out in a 1983 article in Woodwind, Brass, & Percussion that “prominent saxophone teachers have equated their instrument with the human voice,” and that, since vibrato is accepted as a natural embellishment of the human voice, it should be accepted as a natural part of the saxophone tone.