Book excerpt: Dr. Stewart Gordon, Professor of Music in the Department of Keyboard Studies at the University of Southern California, is held in high regard by professional piano teachers worldwide. His critical editions of Beethoven's piano sonatas provide all the tools necessary for a stylistic performance and are essentials for the library of every piano teacher. His thorough research of the earliest available sources has captured the most accurate reflection of the composer's intent. These sonatas contain helpful fingering suggestions and performance recommendations. Other editors' conclusions are noted where performance options are open to interpretation. Volume 3 includes Sonatas 16--24 (Op. 31, Nos. 1, 2, 3; Op. 49, Nos. 1, 2; Opp. 53, 54, 57, and 78).