11. Susses Begrabnis Collection: Concert Programs (SOM) Contributers: Johan Karl Gottfried Lowe (Composer), Gustavo Flores (Tenor), and Matthew Gladden (Piano) Performance: Doctoral Recital Performance Date: 2010-03-14 Location: Music and Performing Arts Library, University of Illinois Concert Program: 2010 Jan-May Pt.1 p.99
12. The Pilgrim Song Collection: Concert Programs (SOM) Contributers: Pyotr Ilych Tchaikovsky (Composer), Gustavo Flores (Tenor), and Matthew Gladden (Piano) Performance: Doctoral Recital Performance Date: 2010-03-14 Location: Music and Performing Arts Library, University of Illinois Concert Program: 2010 Jan-May Pt.1 p.99
13. Widmung Collection: Concert Programs (SOM) Contributers: Robert Schumann (Composer), Gustavo Flores (Tenor), and Matthew Gladden (Piano) Performance: Doctoral Recital Performance Date: 2010-03-14 Location: Music and Performing Arts Library, University of Illinois Concert Program: 2010 Jan-May Pt.1 p.99