Windheim's illustrious career as a character tenor in opera was marked by numerous notable performances, with a significant portion of his extensive repertoire being showcased at the prestigious Metropolitan Opera in New York, where he astonishingly accumulated over 325 performances between 1928 and 1936.
Throughout his tenure, Windheim's versatile vocal range and impressive acting skills allowed him to excel in a wide range of roles, from smaller, yet crucial, character parts to more substantial 'character leads', such as the memorable Vasek in Smetana's renowned opera and the complex David and Mime in Wagner's iconic works.
Furthermore, Windheim had the distinction of participating in an impressive four operatic world premieres, solidifying his position as a respected and accomplished artist in the world of opera.