Correct name of opera in 4 (orig. 5) acts by Bizet to lib. by F. H. Leroy and H. Trianon orig. written for Gounod. Comp. ?1862–3, rev. 1864–5. Efforts to have it prod. having failed, Bizet withdrew it. Incomplete MS of score passed to Paris Cons. in 1929. Private stage perf. of this version was given at Mühringen Castle, Württemberg, 1946 under title Ivan le Terrible. Completed and rev. (reduced to 4 acts) by Henri Busser, perf. Bordeaux 12 Oct. 1951, Cologne 1952, Liverpool 1955. Bizet used portions of score in other works. Perf. of orig. version broadcast by BBC 1975.