- Apr 1 Sergei Rachmaninoff, Russian-American piano virtuoso, conductor, and composer (Aleko; Piano Concerto No. 3, Vocalise), born in Oneg or Semyonovo, Russian Empire (d. 1943) [OS=Mar 20]
- Apr 13 Theodore F. Morse, American composer, born in Washington, D.C. (d. 1924)
- Apr 14 Viktor Josef Keldorfer, Austrian composer, born in Salzburg, Austria (d. 1959)