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 critics as to the artistic value of his work has always been divided. Grove Music Online described Puccini's strengths as a composer as follows: Puccini succeeded in mastering the orchestra as no other Italian had done before him, creating new forms by manipulating structures inherited from the great Italian tradition, loading them with bold harmonic progressions which had little or nothing to do with what was happening then in Italy, though they were in step with the work of French, Austrian and German colleagues. In his work on Puccini, Julian Budden describes Puccini as a gifted and original composer, noting