- Apr 4 Seóirse Bodley, Irish composer and professor of music (University College Dublin), born in Dublin, Ireland (d. 2023) [1]
- Apr 8 Jaroslav Smolka, Czech composer (Metamorfosi), music director, dramaturge, pedagogue, and musicologist, born in Prague, Czechoslovakia (d. 2011)
- Apr 10 Philip Corner, American composer, born in New York City
- Apr 10 Rokusuke Ei, Japanese author and lyricist (Sukiyaki), born in Asakusa, Tokyo (d. 2016)
- Apr 12 Montserrat Caballé, Spanish bel canto operatic soprano, and unlikely pop star (with Freddie Mercury - "Barcelona"), born in Barcelona, Spain (d. 2018)
- Apr 13 Shani Wallis, Irish-American singer and actress (Oliver!), born in Tottenham, Middlesex, England
- Apr 14 Morton Subotnick, American electronic music composer (Silver Apples of the Moon; A Sky of Cloudless Sulphur), born in Los Angeles, California
- Apr 15 Roy Clark, American country and bluegrass singer, guitarist, and banjo player (Hee Haw; The Tonight Show), born in Meherrin, Virginia (d. 2018)
- Apr 16 Perry Botkin Jr, American arranger, composer ("Nadia's Theme"), and producer (Incredible Bongo Band), born in New York City (d. 2021)
- Apr 21 Ian Carr, Scottish jazz musician (Nucleus), born in Dumfries, Scotland (d. 2009)
- Apr 24 Freddie Scott, American singer and songwriter ("Cry to Me"), born in Providence, Rhode Island (d. 2007)
- Apr 25 Jerry Leiber, American songwriter (Leiber & Stoller - "Hound Dog"; "Jailhouse Rock"; "Is That All There Is?"), born in Baltimore, Maryland (d. 2011)
- Apr 26 Ilkka Kuusisto, Finnish opera composer and arts administrator (Finnish National Opera, 1984-92), born in Helsinki, Finland
- Apr 27 Calvin Newborn, American R&B and jazz guitarist, born in Whiteville, Tennessee (d. 2018)
- Apr 28 Karl Heinz Wahren, German pianist and composer (Nocturnal Dances of the Tuscan Virgins in the Florentine Gardens at the Height of the Inquisition), born in Bonn, Germany (d. 2021)
- Apr 28 Oliver "Bops Junior" Jackson, American jazz drummer, born in Detroit, Michigan (d. 1994)
- Apr 29 Darijan Božič, Slovenian composer and conductor, born in Slavonski Brod, Kingdom of Yugoslavia (d. 2018)
- Apr 29 Raymond Hill, American tenor saxophonist (Kings of Rhythm), born in Clarksdale, Mississippi (d. 1996)
- Apr 29 Rod McKuen, American singer-songwriter ("Love's Been Good to Me"; "Jean"; "Without A Worry In The World"), and poet (Lonesome Cities), born in Oakland, California (d. 2015)
Willie Nelson (90 years old)
Apr 29 American country singer-songwriter ("Crazy"; "On the Road Again"), born in Abbott, Texas
About April 1933
How Old? 90 or 91 years old
Generation: Silent Generation
Leap Year: No
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