Selection of art songs and spirituals that are appropriate for classical singers. Suitable for performances in church or recital. Includes: I Wonder As I Wander (John Jacob Niles); Mary Had a Baby (Hall Johnson); O Holy Night (Adolphe Adam); On Christmas Eve (Sibelius); and more. Audio is accessed online using the unique code inside the book and can be streamed or downloaded. The audio files include PLAYBACK+, a multi-functional audio player that allows you to slow down audio without changing pitch, set loop points, change keys, and pan left or right.