1. Sonata Collection: Concert Programs (SOM) Contributers: Bartok (composer) and William Heiles (pianist) Performance: Faculty Piano Recital Performance Date: 1975-10-26 Location: Music and Performing Arts Library, University of Illinois Concert Program: v.24 p.548
2. Third Sonata formant III/2: constellation-miroir Collection: Concert Programs (SOM) Contributers: Boulez (composer) and William Heiles (pianist) Performance: Faculty Piano Recital Performance Date: 1975-10-26 Location: Music and Performing Arts Library, University of Illinois Concert Program: v.24 p.548
3. Three Etudes (Book II) Collection: Concert Programs (SOM) Contributers: Debussy (composer) and William Heiles (pianist) Performance: Faculty Piano Recital Performance Date: 1975-10-26 Location: Music and Performing Arts Library, University of Illinois Concert Program: v.24 p.548