Turandot Puccini. He left behind 36 pages of sketches on 23 sheets for the end of "Turandot". Some sketches were in the form of "piano-vocal" or "short score," including vocal lines with "two to four staves of accompaniment with occasional notes on orchestration." These sketches supplied music for some, but not all, of the final portion of the libretto. Puccini left instructions that Riccardo Zandonai should finish the opera. Puccini's son Tonio objected, and eventually Franco Alfano was chosen to flesh out the sketches after Vincenzo Tommasini (who had completed Boito's "Nerone" after the composer's death) and Pietro Mascagni were rejected.
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