Seifuku 1 and 2 were composed successively in July, 1917 and dedicated to Etsuko Terasaki. Therefore, this work is probably a pair to the Seifuku 2 (Petit-poème 2). About the title, see “Petit-poème 1” above.

While Petit-poème 1 is characterized with the complexed harmony, improvisatory passages and irregular structure, Petit-poème 2, based on the barcarolle-like accompaniment, shows more regularity and unity at a whole.