- Apr 1 Freddie Lennon, father of John Lennon (Beatles), dies at 63
- Apr 1 Miroslav Ponc, Czech composer, dies at 73
- Apr 3 Maurice Johnstone, English brass band composer, dies at 75
- Apr 9 Akio Yashiro, Japanese composer, dies at 46
- Apr 9 Phil Ochs, American anti-war folk singer ("I Ain't Marching Anymore"; "Draft Dodger Rag"), commits suicide at 35
- Apr 22 Frutuoso de Lima Viana, Brazilian pianist and composer, dies at 79
- Apr 25 Alexander Brailowsky, Russian-French pianist (Chopin specialist), dies at 80
- Apr 29 Wilhelm Maler, German composer, dies at 73
- Apr 30 Edvard Fliflet Braein, Norwegian composer (Ut mot havet (Out To Sea); Anne Pedersdotter), dies at 51
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