Task: Text Categorization
Input (English): title character of one of his operas sings of being a ruler in "Del pi sublime soglio", which sees Vitellia sing of her anger and grief in "Deh se piacer" and "Non pi di fiori. " For 10 points each: [10] Name this composer of La Clemenza di Tito and Il Re Pastore, both works with libretto by Metastasio.
Output (English): Fine Arts