The product is a Super Audio CD (SACD) featuring Thomas Tallis' "Spem in Alium" performed by The King's Singers, released by Signum Classics in 2006. This classical music CD comes in a standard jewel case and is sealed, making it a pristine addition to any music collection. With a Renaissance style and mint inlay condition, this disc offers high-quality sound and a captivating musical experience for fans of Tallis' renowned works.