Histochemistry 99 (1) 61в6. At 17, he was engaged as a court musician in Salzburg. Bona nox ("Good night") K. Mozart told his father that she had a quot;pair of bright, black eyes and a pretty figurequot;; that she was quot;kind-hearted, clever, modest, good-tempered, economical, neatquot;; that she quot;dressed her own hair, understood housekeeping, and had the best heart in the world.