[citation needed] In New York, Schillinger flourished, becoming famous as an advisor to many leading American musicians and concert music composers, including George Gershwin, Earle Brown, Benny Goodman, Glenn Miller, Oscar Levant, Tommy Dorsey, Henry Cowell, and Quincy Jones.

After the posthumous success of Porgy and Bess, Schillinger claimed he had a large and direct influence in overseeing its creation; Ira Gershwin completely denied that his brother had any such assistance for the work.

Schillinger wrote his First Airphonic Suite for Theremin, who played the instrument at the premiere in 1929 with the Cleveland Orchestra, conducted by Nikolai Sokoloff.

Schillinger accredited a small group of students as qualified teachers of his system, and after his death, one of them, Lawrence Berk, founded a music school in Boston to continue its dissemination.

Three certified teachers were Asher Zlotnik of Baltimore, Maryland (a student and personal friend of Dowling),[8] Edwin Gerschefski,[9] and Roland Wiggins.