This Russian collaborated on "Swan Lake" with choreographer Marius Petipa
POET AND
... [DOC] [TLE] Lev Ivanov facts, information, pictures | Encyclopedia.com articles ... [PAR] Dancer, choreographer, ballet master, composer, and teacher Lev Ivanov's ... of 
Dance says of Ivanov's Swan Lake, it "stood as a monument to Russian and 
world ... Ivanov soon began substituting for Marius Petipa during illnesses, which 
was ... which was his second collaboration with Tchaikovsky (after Sleeping 
Beauty).