Amazon.com description: Product Description: (Music Minus One). Performed by Svetozar Rangelov, basso Accompaniment: Orchestra of the Sofia National Opera Conductor: Nayden Todorov This great collection of bass-baritone arias from Verdi's greatest operas from Nabucco to Don Carlo makes a great showcase for any fan of the great 19th-century Italian master. Join the Sofia National Opera for a center-stage thrill! Includes an expansive, newly engraved vocal score, printed on high-quality ivory paper; and a CD+G graphics-enabled compact disc with complete versions (with soloist) in digital stereo, followed by digital stereo orchestral accompaniments to each piece, minus the soloist.