Listen to Serenade for Strings in C Major, Op. 48: III. Elegia. Larghetto online. Serenade for Strings in C Major, Op. 48: III. Elegia. Larghetto is an Instrumental language song and is sung by The World Symphony Orchestra and Leopold Ostrov. Serenade for Strings in C Major, Op. 48: III. Elegia. Larghetto, from the album 111 Tchaikovsky Masterpieces, was released in the year 2012. The duration of the song is 9:02. Download Instrumental songs online from JioSaavn.