Mykola Leontovych
Mykola Leontovych specialised in a cappella choral music. He is remembered today mostly through the musical works he left behind, which include over 150 choral compositions. These range from artistic arrangements of folk songs, religious works (including his liturgy), cantatas, and choral compositions set to the words of various Ukrainian poets. His two most famous works are the choral miniatures "Schedryk" and "Dudaryk".
Marius Petipa
Marius Petipa is noted for his long career as "Premier maître de ballet" ("First Ballet Master") of the St. Petersburg Imperial Theatres, making him Ballet Master and principal choreographer of the Imperial Ballet (precursor of the Kirov/Mariinsky Ballet), a position he held from 1871 until 1903. Petipa created over fifty ballets, some of which have survived in versions either faithful to, inspired by, or reconstructed from the original. Among these works, he is most noted for "The Pharaoh's Daughter" (1862); "Don Quixote" (1869); "La Bayadère" (1877); "Le Talisman" (1889); "The Sleeping Beauty" (1890); "The Nutcracker" (likely choreographed by Lev Ivanov, perhaps with Petipa's counsel and instruction) (1892); "Le Réveil de Flore" (1894); "La Halte de cavalerie" (1896); "Raymonda" (1898); "Les Saisons" (1900), and "Les Millions d’Arlequin (a.k.a. Harlequinade)" (1900).