Question:  Sigur Rós' EP consists of the songs the group composed for an American dancer and choreographer who was at the forefront of the American modern dance for more than how many years?
Sentence (from "Contemporary dance in Japan"): Horiuchi Gen, a 1980 Prix de Lausanne winner, became a major soloist with the New York City Ballet, and Japanese performers noted for their superb technique were members of many major international companies.
Relevant evidence: No