Classical music written in collaboration would include: There are also instances where a work was left unfinished at the composer's death, and was completed by another composer. In such cases, the later composer generally strives to ensure the finished product is as close as possible to the original composer's intentions, as revealed by their notes, rough drafts, or other evidence. One of the best known examples is the completion by Franco Alfano of Giacomo Puccini's opera "Turandot". There may also be a case for describing Sir Edward Elgar's Symphony No. 3 as a work by both Elgar and Anthony Payne. However, these types of works
Giacomo Puccini the top ten works performed, and Puccini ranks third (behind Verdi and Mozart) in the number of performances of his operas over all. Gustav Kobbé, the original author of "The Complete Opera Book", a standard reference work on opera, wrote in the 1919 edition: "Puccini is considered the most important figure in operatic Italy today, the successor of Verdi, if there is any." Other contemporaries shared this view. Italian opera composers of the generation with whom Puccini was compared included Pietro Mascagni (1863–1945), Ruggero Leoncavallo (1857–1919), Umberto Giordano (1867–1948), Francesco Cilea (1866–1950), Baron Pierantonio Tasca (1858–1934), Gaetano Coronaro (1852–1908), and