The purpose of this document is to provide a stylistic analysis of Seventeen Waltzes for Piano by Leo Ornstein by examining the music in the analytical areas of form, harmony, melody, rhythm, texture, and keyboard layout--along with suggestions concerning pedal usage. These seventeen individual works were compiled and catalogued by the composer's son, Severo Ornstein. The collection (S.400-S.416) is found to be a significant contribution to 20th-century piano literature by a lesser-known but nonetheless great Russian-Jewish-American composer and pianist, Leo Ornstein. The Seventeen Waltzes for Piano are a unique realization of the composer's improvisatory writing style, mastery of large forms, complex harmonic language, melodic continuity, rhythmic patterns, dense textures with wide-ranged "orchestral" scoring, and virtuosic approach to the keyboard (with overall sparse indications for the use of the damper pedal).