Opera in 4 acts by Dvořák to lib. by Marie Červinková‐Riegrová based on writings by Mikovec and on Schiller's Demetrius. Comp. 1881–2, prod. Prague 1882. Rev. 1883, prod. Prague 1883; further rev. 1885, prod. Prague 1892. Revised again 1894–5 with much re‐composition, and prod. that year in Prague. For a prod. in 1904, Dvořák reverted to a combination of the earlier and latest versions. Brit. f.p. Nottingham 1979. US f.p. NY (concert) 1984.