Wolfgang Amadeus Mozart (1756-1791) was an Austrian composer of the classical period.

The Requiem in D minor, K.626 by Mozart was incomplete upon Mozart’s death in 1791.

Darius Milhaud (1892-1974), was a French modernist composer.

Milhaud completed La Création du monde in 1923.

Zoltán Kodály (1882-1967), was a Hungarian 20th century composer.

Kodály completed Háry János in 1927.

Leoš Janáček (1824-1896), was a Czech composer of the late romantic era.

Janáček completed Sinfonietta in 1926.

Ottorino Respighi (1879-1936) was an Italian 20th century neoclassical/romantic composer.

Pines of Rome (Pini di Roma) was completed in 1924.

Ottorino Respighi (1879-1936) was an Italian 20th century neoclassical/romantic composer.

Fountains of Rome (Fontane di Roma) was completed in 1916.

Alexander Scriabin (1872-1915) was a Russian composer of the Late Romantic period.

Symphony No. 2 by Scriabin was completed in 1902.

Joseph Haydn (1732-1809), was an Austrian composer of the Classical era.

Haydn completed The Creation (Die Schöpfung) in 1798.

Robert Schumann (1810-1856) was an German composer of the Romantic period.

Schumann completed Symphony No. 3 in 1850.

Robert Schumann (1810-1856) was an German composer of the Romantic period.

Schumann completed Symphony No. 2 in 1846.