TY - GEN A1 - Marschner, Heinrich T1 - Impromptus pour le pianoforte, 2 ; oeuvre 23 Y1 - 1823 UR - https://opus4.kobv.de/opus4-udk/frontdoor/index/index/docId/443 UR - https://nbn-resolving.org/urn:nbn:de:kobv:b170-4430 ER -