Listen to Sonata No.14 in C-Sharp Minor, Op. 27 No. 2. Quasi Una Fantasia (Moonlight): I. Adagio sostenuto online. Sonata No.14 in C-Sharp Minor, Op. 27 No. 2. Quasi Una Fantasia (Moonlight): I. Adagio sostenuto is an English language song and is sung by Victor Merzhanov. Sonata No.14 in C-Sharp Minor, Op. 27 No. 2. Quasi Una Fantasia (Moonlight): I. Adagio sostenuto, from the album Recital in The Great Hall of The Moscow Conservatoire, was released in the year 2002. The duration of the song is 6:25. Download English songs online from JioSaavn.