I don't know the bagatelle yet, but the final piano concerto is quite famous and has a jazzy passage well ahead of its time. The 14th Quartet is a long, interesting work; according to Wikipedia it was the composer's favorite late quartet.
Gaona is a cellist. The dissertation was written at the University of Illinois at Urbana-Champaign, one of the settings for Richard Powers' novel, The Gold Bug Variations, which features a character who listens to the Glenn Gould recording of Bach's "Goldberg Variations" over and over again; Powers is an English professor at the school. Noted composer Steven Andrew Taylor also is on the faculty there (I have one of Taylor's albums, "The Machine Awakes.")
Hat tip: Ted Hand.