Original: Popular composers of opera seria included Alessandro Scarlatti, Johann Adolf Hasse, Leonardo Vinci, Nicola Porpora, George Frideric Handel, and in the second half of the 18th century Tommaso Traetta, Gluck, and Mozart.
Simplified: Popular composers of opera seria included Hasse, Vinci, Jommelli, George Frideric Handel, Piccinni, Paisiello, Cimarosa, Gluck, and Mozart.