Approximately a dozen young singers are selected from the near 400 who audition annually, and they are in residence for twelve months. Over the course of the year they receive advanced instruction in numerous aspects of operatic performance, including voice lessons and coachings, language and acting training, and master classes with some of opera's most renowned artists. The singers gain valuable performing experience by participating in recitals and concerts at many Chicago-area venues. During Lyric Opera's mainstage season, they perform and understudy roles at all levels. The singers work with the world's greatest opera singers, conductors, and directors, thus advancing the young artists’ professionalism. In 2005, author William Murray wrote a book about a year in the life of an entering class at the Ryan Opera Center.