With "Caro Gemello" - their first joint album - countertenor Valer Sabadus and Concerto Köln celebrate the friendship between the castrato Farinelli and librettist Pietro Metastasio The castrato Farinelli and librettist Metastasio were two of the most outstanding musical figures of the 18th century. What few people know is that they shared a strong friendship all their lives. In the correspondence they carried on for many years, they always began each letter with "caro gemello" ("Dear twin brother") - a sign of their close artistic relationship.

Der Pianist William Youn wurde von der internationalen Presse als "echter Poet" mit "bravouröser Anschlagstechnik" gelobt - dessen Spiel durch Klarheit und Sinn für Zwischentöne gekennzeichnet ist.