Works published since 1857 have received alternative catalogue designations instead of opus numbers. The present standard musicological reference for Chopin's works is the Kobylańska Catalogue (usually represented by the initials 'KK'), named for its compiler, the Polish musicologist Krystyna Kobylańska. COUNT 6
QSN1 The Kobylańska Catalogue was named for who? ANS1 Krystyna Kobylańska QSN2 Pieces published after what year stopped receiving opus numbers? ANS2 1857 QSN3 What have pieces published after 1857 been given rather than opus numbers? ANS3 alternative catalogue designations QSN4 What is the current musicologist reference for Chopin's pieces? ANS4 the Kobylańska Catalogue QSN5 What is the shortened reference for the Kobylańska Catalogue? ANS5 KK QSN6 Who compiled the Kobylańska Catalogue? ANS6 Krystyna Kobylańska.