Cantolopera books include versions for voice and piano of the world's most famous arias, plus plots and translations. The CDs feature two versions of each aria: one with a 130-piece orchestra providing accompaniments to allow the professional, student or opera fan to practice, and a performance by an established artist. This collection includes: Ave Maria (Arcadelt) • Ave Maria (Caccini) • O mio Signor (Händel) • Pietà, Signore (Stradella) • Ave Maria (Schubert) • Ave Maria (Gounod) • Agnus Dei (Bizet) • Ave Maria (Verdi) • Panis angelicus (Franck).