Rogowski Ludomir Michal. Propos Sérieux et Plaisants pour piano

Warsawa: Gebethner and Wolff, 1926. — 13 p.8 pieces: Moderato, Moderato, Tranquillo, Moderato, leggiero, Adagio, Andante, Allegro moderato, Andante moderato.
Rogowski was greatly influenced by the music of Claude Debussy, but also by Polish, French, Bosnian, etc. popular idioms. He used whole-tone scales, pentatonic scales, and various modes, such as the one he called Slavic: C , D, E , F♯, G , A , B ♭, or the symmetrical half-tone, which he called the Persian mode. He was also interested in biology, psychology, Hindu philosophy, the occult, and the visual arts.