March 21

Events

 * 1939 - Bell Labs engineer Homer Dudley was granted a patent for the vocoder.
 * 1952 - The first rock concert, the, is hosted at the Cleveland Arena by Alan Freed

Births

 * 1527 -, German composer (d. 1558)
 * 1685 -, German composer (d. 1750)
 * 1839 -, Russian composer (d. 1881)
 * 1895 -, Croatian violinist (d. 1955)
 * 1902 -, American musician (d. 1988)
 * 1904 -, Greek composer (d. 1949)
 * 1920 -, Estonian singer (d. 1975)
 * 1921 -, Belgian violinist (d. 1986)
 * 1936 -, British jazz composer, bandleader and pianist
 * 1940 -, American singer
 * 1943 -, German conductor
 * 1943 -, English musician, artist, actor, writer, Bonzo Dog Doo Dah Band (d. 1995)
 * 1945 -, American musician (Sly & the Family Stone)
 * 1949 -, American musician
 * 1950 -, English musician, former member of Supertramp
 * 1951 -, American singer (The Stylistics)
 * 1956 -, English guitarist, vocalist and songwriter (The House of Love)
 * 1959 -, Japanese composer
 * 1960 -, American drummer
 * 1963 -, American guitar virtuoso (d. 2003)
 * 1967 -, Swedish musician (Ace of Base)
 * 1967 -, British MC (The Prodigy)
 * 1968 - (Preemo), hip hop producer
 * 1972 -, hip hop artist
 * 1974 -, American singer (Dope)
 * 1980 -, Canadian guitarist and singer (Sum41)
 * 1990 -, German Singer (Monrose)

Deaths

 * 1801 –, Italian composer (b. 1741)
 * 1934 –, Austrian composer (b. 1878)
 * 1936 –, Russian composer (b. 1865)
 * 1951 –, Dutch conductor (b. 1871)
 * 1987 –, American musician (b. 1951)
 * 1991 –, American guitar manufacturer (b. 1909)
 * 1992 –, American composer (b. 1930)
 * 2005 –, American singer (b. 1924)