The product is an audio CD titled "Aris Christofellis - Les Castrats au temps de Mozart / Ensemble" released in 1998 under the record label EMI Classics. It features music by composers such as Flavio Colusso, Niccolo Jommelli, Aris Christofellis, Wolfgang Amadeus Mozart, Luigi Cherubini, Johann Christian Bach, Giuseppe Aprile, and Giuseppe Gazzaniga. The Ensemble Seicentonovecento performs the compositions, making it a unique piece that captures the essence of the castrato singers during the time of Mozart.