Registry
- Antonio Maria Abbatini (c. 1609 - c. 1677)
- Adolphe Adam (1803 - 1856)
- Louis Adam (1758 - 1848)
- Guido Adler (1855 - 1941)
- Guido Agosti (1901 - 1989)
- Albrecht Agthe (1790 - 1873)
- Johann Friedrich Alberti (1642 - 1710)
- Francesco Alborea (1691 - 1739)
- Johann Georg Albrechtsberger (1736 - 1809)
- Vincenzo Albrici (1631 - 1687)
- Charles-Valentin Alkan (1813 - 1888)
- Gregorio Allegri (c.1582 - 1652)
- Joseph-Henri Altès (1826 - 1899)
- Johann Anton André (1775 - 1842)
- Giovanni Francesco Anerio (1569 - 1630)
- Giovanni Anfossi (1864 - 1946)
- Anton Arensky (1861 - 1906)
- Martha Argerich (1941 - None)
- Denis Arnold (1926 - 1986)
- Claudio Arrau (1903 - 1991)
- Bernard Artophaneus (None - None)
- Vladimir Ashkenazy (1937 - None)
- Bonifazio Asioli (1769 - 1832)
- Stefan Askenase (1896 - 1985)
- Thomas Attwood (1765 - 1838)
- Atys (1715 - 1784)
- Daniel Auber (1782 - 1871)
- Leopold Auer (1845 - 1930)
- Edmund Ayrton (1734 - 1808)