Canon turnover

How much each decade's list of most-performed composers overlaps with the previous decade's (new in 1.1).

Formula: Jaccard index |A ∩ B| / |A ∪ B| for the top 10 (or 25) composers of this and the previous decade. 1 = same list, 0 = no overlap.
How to read it: Top 10: median 0.54 (roughly seven of ten stay), range 0.33 (1850s) to 0.82 (1930s, 2000s). Top 25: highest in the 2020s at 0.85.
Caveats: The 1840s have 8 seasons and the 2020s 7 including the one in progress. Ties at the cut-off are broken alphabetically, so one name changing at the boundary moves the index a lot.

By decade; each point is the overlap with the previous decade.

Decade	Seasons	Top 10	Top 25	New in top 10
1840	8
1850	10	0.33	0.39	Chopin, Frédéric; Gade, Niels; Schubert, Franz; Schumann, Robert; Wagner, Richard
1860	10	0.67	0.39	Berlioz, Hector; Liszt, Franz
1870	10	0.67	0.43	Bach, Johann Sebastian; Raff, Joachim
1880	10	0.43	0.72	Brahms, Johannes; Rubinstein, Anton; Schubert, Franz; Weber, Carl Maria von
1890	10	0.43	0.79	Bach, Johann Sebastian; Dvorak, Antonín; Saint-Saens [Saint-Saëns], Camille; Tchaikovsky, Pyotr Ilyich
1900	10	0.43	0.67	Berlioz, Hector; Chopin, Frédéric; Mendelssohn, Felix; Strauss, Richard
1910	10	0.43	0.61	Brahms, Johannes; Dvorak, Antonín; Mozart, Wolfgang Amadeus; Schubert, Franz
1920	10	0.67	0.61	Bach, Johann Sebastian; Weber, Carl Maria von
1930	10	0.82	0.79	Debussy, Claude
1940	10	0.54	0.67	Mendelssohn, Felix; Ravel, Maurice; Strauss, Johann, II
1950	10	0.67	0.67	Berlioz, Hector; Prokofiev, Sergei
1960	10	0.43	0.61	Copland, Aaron; Debussy, Claude; Strauss, Richard; Stravinsky, Igor
1970	10	0.54	0.67	Haydn, Franz Joseph; Mahler, Gustav; Wagner, Richard
1980	10	0.54	0.72	Dvorak, Antonín; Prokofiev, Sergei; Strauss, Johann, II
1990	10	0.54	0.67	Bernstein, Leonard; Copland, Aaron; Ravel, Maurice
2000	10	0.82	0.67	Mendelssohn, Felix
2010	10	0.67	0.79	Bach, Johann Sebastian; Sibelius, Jean
2020	7	0.54	0.85	Gershwin, George; Prokofiev, Sergei; Williams, John

Rank by decade

Rank	1840	1850	1860	1870	1880	1890	1900	1910	1920	1930	1940	1950	1960	1970	1980	1990	2000	2010	2020
1	Beethoven	Mendelssohn	Beethoven	Beethoven	Beethoven	Wagner	Wagner	Wagner	Wagner	Beethoven	Beethoven	Beethoven	Beethoven	Mozart	Mozart	Mozart	Mozart	Beethoven	Mozart
2	Mendelssohn	Beethoven	Mendelssohn	Wagner	Wagner	Beethoven	Beethoven	Beethoven	Beethoven	Wagner	Tchaikovsky	Brahms	Mozart	Beethoven	Beethoven	Beethoven	Beethoven	Mozart	Beethoven
3	Weber	Weber	Mozart	Schumann	Schumann	Tchaikovsky	Tchaikovsky	Tchaikovsky	Tchaikovsky	Brahms	Brahms	Mozart	Tchaikovsky	Stravinsky	Brahms	Tchaikovsky	Brahms	Tchaikovsky	Bernstein
4	Mozart	Mozart	Schumann	Liszt	Schubert	Schubert	Liszt	Liszt	Brahms	Mozart	Wagner	Tchaikovsky	Brahms	Tchaikovsky	Dvorak	Strauss	Tchaikovsky	Brahms	Bach
5	Spohr	Spohr	Liszt	Mozart	Liszt	Schumann	Saint-Saens [Saint-Saëns]	Brahms	Strauss	Tchaikovsky	Mozart	Wagner	Stravinsky	Brahms	Tchaikovsky	Brahms	Prokofiev	Bach	Williams
6	Rossini	Schubert	Weber	Berlioz	Berlioz	Dvorak	Mendelssohn	Dvorak	Mozart	Bach	Bach	Ravel	Berlioz	Ravel	Strauss	Copland	Dvorak	Bernstein	Dvorak
7	Donizetti	Schumann	Wagner	Chopin	Mozart	Bach	Bach	Saint-Saens [Saint-Saëns]	Bach	Strauss	Mendelssohn	Berlioz	Ravel	Haydn	Wagner	Dvorak	Strauss	Dvorak	Brahms
8	Hummel	Gade	Berlioz	Mendelssohn	Brahms	Brahms	Chopin	Strauss	Weber	Schubert	Ravel	Bach	Copland	Strauss	Prokofiev	Ravel	Ravel	Strauss	Gershwin
9	Lindpaintner	Wagner	Chopin	Bach	Rubinstein	Saint-Saens [Saint-Saëns]	Strauss	Schubert	Liszt	Weber	Strauss	Mendelssohn	Strauss	Mahler	Haydn	Bernstein	Bernstein	Ravel	Prokofiev
10	Kalliwoda	Chopin	Schubert	Raff	Weber	Liszt	Berlioz	Mozart	Schubert	Debussy	Strauss	Prokofiev	Debussy	Wagner	Strauss	Prokofiev	Mendelssohn	Sibelius	Tchaikovsky

Source

New York Philharmonic Performance History: works, composers and conductors on more than 15,000 programs from the first concert in December 1842 to the current season. Besides the Philharmonic proper, the archive holds programs of the New York Symphony, the Stadium concerts and chamber series; this site does not filter them out. Updated nightly. https://github.com/nyphilarchive/PerformanceHistory · License: CC0 1.0

nyphil_season_summary.csv nyphil_composer_season.csv nyphil_work_frequency.csv nyphil_work_frequency_all_top300.csv nyphil_orchestra_programs.csv nyphil_composer_summary.csv nyphil_decade_top.csv nyphil_canon_turnover.csv nyphil_work_frequency_top50_composers.csv nyphil_conductor_repertoire.csv nyphil_new_work_survival.csv nyphil_new_work_survival_summary.csv nyphil_women_share.csv aliases/nyphil_composers.csv aliases/nyphil_conductors.csv imslp/imslp_reception_period.csv imslp/imslp_nyphil_match_rate.csv imslp/imslp_nyphil_matches.csv