Table:
Composer | Born | Died | Nationality | Notable works for piano | Remarks
Roy Agnew | 1891 | 1944 | Australian |  | 
Theodore Akimenko (ru) | 1876 | 1945 | Russian, Ukrainian | IMSLP | 
Malcolm Arnold | 1921 | 2006 | English | Sonata for Piano (1942) / Variations on a Ukrainian Folk Song, Op. 9 | 
Willem Andriessen | 1887 | 1964 | Dutch |  | 
Béla Bartók | 1881 | 1945 | Hungarian | Mikrokosmos, Sz. 107, BB 105 / Out of Doors, Sz. 81, BB 89 / Romanian Folk Dances, Sz. 56, BB 68 / Allegro barbaro, Sz. 49, BB 63 | Folksong-influenced, Centric, Modal, Polymodal/Polytonal
Arnold Bax | 1883 | 1953 | English | Piano Sonata No. 1 (1910, 1917–1920) / Piano Sonata No. 2 (1919) / Piano Sonata in E-flat (1921) / Piano Sonata No. 3 (1926) / Piano Sonata No. 4 (1932) | Romantic, Impressionist
York Bowen | 1884 | 1961 | English |  | Romantic
Frank Bridge | 1879 | 1941 | English |  | Late-Romantic, hints of Second Viennese School
Ferruccio Busoni | 1866 | 1924 | Italian | Fantasia contrappuntistica (1910) | Mature works of indeterminate key; Late in career, neoclassical
Alfredo Casella | 1883 | 1947 | Italian |  | 
Cécile Chaminade | 1857 | 1944 | French |  | 
Mikalojus Konstantinas Čiurlionis | 1875 | 1911 | Lithuanian | Piano Sonata in F major / Nocturne in C-sharp minor / Nocturne in F minor / Impromptu in F-sharp minor | 
Claude Debussy | 1862 | 1918 | French | Études, L 136 / Préludes (L 117 and L 123) / Suite bergamasque, L 75 / Deux arabesques, L 66 | Impressionist
Duke Ellington | 1899 | 1974 | American |  | Jazz
Samuil Feinberg | 1890 | 1962 | Russian |  | 
Ossip Gabrilowitsch | 1878 | 1936 | Russian, American |  | 
George Gershwin | 1898 | 1937 | American | Three Preludes / George Gershwin's Songbook | Jazz-influenced
Alberto Ginastera | 1916 | 1983 | Argentine |  | Earlier works often integrate Argentine folk themes; later works increasingly abstracted
Alexander Glazunov | 1865 | 1936 | Russian |  | Romantic
Leopold Godowsky | 1870 | 1938 | Polish, American | Studies on Chopin's Études (1894–1914) | 
Percy Grainger | 1882 | 1961 | Australian, English, American |  | 
Enrique Granados | 1867 | 1916 | Spanish |  | Distinctly Spanish
Scott Joplin | 1867 | 1917 | American |  | Ragtime
Dmitri Kabalevsky | 1904 | 1987 | Russian, Soviet |  | 
Aram Khachaturian | 1903 | 1978 | Soviet, Armenian |  | 
Viktor Kosenko | 1896 | 1938 | Ukrainian |  | 
Joseph Lamb | 1887 | 1960 | American |  | Ragtime
Constant Lambert | 1905 | 1951 | English | Piano Sonata (1928–1929) / Suite in 3 Movements (1925) / Elegiac Blues (1927) | 
Ernesto Lecuona | 1895 | 1963 | Cuban |  | 
Nikolai Medtner | 1880 | 1951 | Russian |  | 
Erkki Melartin | 1875 | 1937 | Finnish |  | 
Olivier Messiaen | 1906 | 1992 | French | Vingt regards sur l'enfant-Jésus (1944) / Quatre études de rythme (1949–1950) / Catalogue d'oiseaux (1956–1958) | 
Federico Mompou | 1893 | 1987 | Catalan, Spanish |  | 
Thelonious Monk | 1917 | 1982 | American |  | Jazz
Nikolai Myaskovsky | 1881 | 1950 | Russian, Soviet |  | 
Ernesto Nazareth | 1863 | 1934 | Brazilian |  | Eclectic influences; primarily dance music (tangos, waltzes, polkas, etc.), influenced by African and Argentine styles
Walter Niemann | 1876 | 1953 | German |  | Impressionist and exotic influences
Ignacy Jan Paderewski | 1860 | 1941 | Polish |  | 
Jacobo Palm | 1887 | 1982 | Curaçao-born |  | 
John Palm | 1885 | 1925 | Curaçao-born |  | 
Rudolph Palm | 1880 | 1950 | Curaçao-born |  | 
Selim Palmgren | 1878 | 1951 | Finnish |  | 
Isidor Philipp | 1863 | 1958 | French, Hungarian |  | 
Francis Poulenc | 1899 | 1963 | French |  | 
Sergei Prokofiev | 1891 | 1953 | Russian | Sonata No. 6 in A major, Op. 82 (1940) / Sonata No. 7 in B-flat major, Op. 83 (1942) / Sonata No. 8 in B-flat major, Op. 84 (1944) / Visions fugitives, Op. 22 (1915–1917) / Toccata in D minor, Op. 11 (1912) | 
Sergei Rachmaninoff | 1873 | 1943 | Russian |  | Romantic
Maurice Ravel | 1875 | 1937 | French | Gaspard de la nuit (1908) / Le tombeau de Couperin (1914–1917) / Jeux d'eau (1901) | Impressionist; sometimes jazz-influenced
Vladimir Rebikov | 1866 | 1920 | Russian |  | Impressionist, Romantic
Emmanuel Rhené-Baton | 1879 | 1940 | French |  | 
Jean Roger-Ducasse | 1873 | 1954 | French |  | 
Erik Satie | 1866 | 1925 | French |  | Impressionist; Minimalist (precursor)
Ahmed Adnan Saygun | 1907 | 1991 | Turkish |  | Neoclassical, traditional Turkish folksong influence
Florent Schmitt | 1870 | 1958 | French |  | Impressionist, Late-Romantic
Arnold Schoenberg | 1874 | 1951 | Austrian, American | Drei Klavierstücke, Op. 11 / Fünf Klavierstücke, Op. 23 / Sechs Kleine Klavierstücke, Op. 19 / Suite für Klavier, Op. 25 | Serial (mature/late career), Late-Romantic (early career)
James Scott | 1885 | 1938 | American, African-American |  | Ragtime
Alexander Scriabin | 1872 | 1915 | Russian | 10 piano sonatas | Late-Romantic (early); Atonal, Mystical (mature)
Dmitri Shostakovich | 1906 | 1975 | Russian, Soviet | Piano Sonata No. 1, Op. 12 (1926) / 24 Preludes, Op. 34 (1932–1933) / Piano Sonata No. 2 in B minor, Op. 61 (1943) / 24 Preludes and Fugues, Op. 87 (1950–1951) | Post-Romantic; neoclassical; elements of grotesque
Jean Sibelius | 1865 | 1957 | Finnish | Sonata in F major, Op. 12 / Three Sonatinas, Op. 67 | Late-Romantic; post-Romantic
Kaikhosru Shapurji Sorabji | 1892 | 1988 | English | Opus clavicembalisticum / Études transcendantes (100) / Sequentia cyclica super "Dies irae" ex Missa pro defunctis / Piano Symphony No. 2 / "Gulistān"—Nocturne for Piano | Neoclassical, neoromantic, postimpressionistic
Alexei Stanchinsky | 1888 | 1914 | Russian |  | Post-Romantic, modal
Wilhelm Stenhammar | 1871 | 1927 | Swedish |  | 
Richard Strauss | 1864 | 1949 | German |  | 
Igor Stravinsky | 1882 | 1971 | Russian, French, American | Piano Sonata in F-sharp minor / Quatre études, Op. 7 / Piano-Rag-Music / Trois mouvements de Petrouchka | Post-Romantic (early); Neoclassical (middle); Serial (late career)
Soulima Stravinsky | 1910 | 1994 | Swiss, American |  | 
Tōru Takemitsu | 1930 | 1996 | Japanese |  | Eclectic, with influences ranging from jazz, popular music, avant-garde procedures, and traditional Japanese music; strongly influenced by Debussy and Messiaen
Joaquin Turina | 1882 | 1949 | Spanish |  | 
Galina Ustvolskaya | 1919 | 2006 | Russian |  | Eclectic
Heitor Villa-Lobos | 1887 | 1959 | Brazilian | Bachianas Brasileiras No. 4 / Rudepoêma (1921–1926) | 
Ángel Villoldo | 1861 | 1919 | Argentine |  | Tango
Pancho Vladigerov | 1899 | 1978 | Bulgarian |  |

Question: how od was alberto ginastera when he died?
Answer: 67

Question: tell me the number of french people on the list.
Answer: 11

Question: how many pianists completed at least two notable works?
Answer: 16

Question: were there more than 4 american composers listed?
Answer: yes

Question: how long was soulima stravinsky alive?
Answer: 84 years

Question: how many composers died before 1960?
Answer: 46

Question: how many english composers are on this list?
Answer: 7