Mozart would sometimes switch his focus between operas and instrumental music. He produced operas in each of the prevailing styles: opera buffa, such as "The Marriage of Figaro", "Don Giovanni", and "Così fan tutte"; opera seria, such as "Idomeneo"; and Singspiel, of which "Die Zauberflöte" is the most famous example by any composer. In his later operas, he employed subtle changes in instrumentation, orchestral texture, and tone colour, for emotional depth and to mark dramatic shifts. Here his advances in opera and instrumental composing interacted: his increasingly sophisticated use of the orchestra in the symphonies and concertos influenced his operatic orchestration, and his developing subtlety in using the orchestra to psychological effect in his operas was in turn reflected in his later non-operatic compositions.