Beethoven�s String Trios are masterly in form and content and, with Mozart�s only string trio, the Divertimento K. 563, are among the most significant works in the entire genre. Beethoven�s first, Op. 3, is an ambitious six-movement work probably modelled on Mozart�s work and ending, as does Mozart�s, with a brilliant Rondo in opera buffa style. His second, the Serenade in D major, Op. 8, shows Beethoven experimenting with form, and employing greater contrasts of colour and texture.