What is "ivesiana"

Ivesiana is a ballet made by New York City Ballet co-founder and ballet master George Balanchine to Charles Ives' Central Park in the Dark (1906), The Unanswered Question (1906), In the Inn (1904-06?), and In the Night (1906) shortly after the composer's death. The premiere took place September 14, 1954, at the City Center of Music and Drama. Other works to the music of Ives in the City Ballet repertory include Peter Martins' Calcium Light Night, Jerome Robbins' Ives, Songs and Eliot Feld's The Unanswered Question.