This all-in-one package includes the original Arias for Baritone book from the G. Schirmer Opera Anthology along with two accompaniment CDs AND the corresponding Diction Coach book/two CD set. Diction Coach includesrecorded diction lessons IPA and word for word translations. In addition to piano accompaniments playable on both your CD player and computer the enhanced accompaniment CDs also include tempo adjustment software for CD-ROMcomputer use.