Complex sentence: The Symphony debuted at Carnegie Hall on May 12, repeating the program at the inaugural Spring for Music Festival, which invites orchestras "dedicated to distinctive and adventurous programming" to perform "unusual repertoire".
Split into simpler sentences: The Symphony debuted at Carnegie Hall on May 12. The group repeated the program at the inaugural Spring for Music Festival, which invites orchestras "dedicated to distinctive and adventurous programming" to perform "unusual repertoire".