One of Japan's foremost traditional stage arts, the Ningyo Johruri Bunraku puppet theatre is a blend of sung narrative, instrumental accompaniment and puppet drama. This theatrical form emerged during the early Edo period (c. 1600) when puppetry was coupled with Johruri, a popular 15th-century narrative genre. The plots related in Ningyo Johruri, as this new form of puppet theatre was known at the time, derived from two principal sources: historical plays set in feudal times (Jidaimono), and contemporary dramas that explored the conflict between affairs of the heart and social obligation (Sewamono).