The Roei Hyakushu (a hundred medieval Japanese court songs) is a set of waka written while keeping with a theme set by using verses in various anthologies like the Wakan Roei Shu (Collection of Japanese and Chinese Court Songs).
朗詠百首（ろうえいひゃくしゅ）は、和漢朗詠集等の詩句を題とし、和歌に翻案した定数歌。