According to the review in the New York Times, in addition to the twelve (unspecified) etudes, Goldsand added Schonberg, Harold C. "GOLDSAND OFFERS CHOPIN PROGRAM: PIANIST PLAYS THE C MINOR SONATA, AN EARLY WORK IN CARNEGIE HALL RECITAL." New York Times (1923-), Dec 03 1959, p. 46. ProQuest. Web. 22 Apr. 2022.