Protyazhnaya (Протяжная) is a genre of Russian folk song characterized by long, drawn-out vocalizations, translated in Japanese as "Oso-uta" (遅歌, slow song) or "Nobe-uta" (延べ歌, extended song). It is one of the folk songs included in Balakirev's 40 Russian Folk Songs, arranged by him, and was transcribed in Nizhegorodsk Province. This folk song was also arranged as a piano duet in Tchaikovsky's 50 Russian Folk Songs.