Michiko Hirayama (平山 美智子, Hirayama Michiko, 14 July 1923 – 1 April 2018)[1] was a Japanese singer, noted for her interpretation of Giacinto Scelsi's "Canti del Capricorno".

[2] Hirayama studied music at Tokyo University of the Arts, Accademia di Santa Cecilia in Rome, Accademia Chigiana in Siena and at the Mozarteum Salzburg;[1] she soon discovered her affinity for contemporary music.

When Scelsi heard Hirayama singing old Japanese songs at a concert, he asked her if she would be interested in his music.

[2] The first work of Scelsi and Hirayama, "Hô", debuted in 1961 at the music festival "Nuova Consonanza".

[2][3] Hirayama owned a full score of "Canti del Capricorno" with Scelsi's handwritten comments and played an important role in the origination process of the 20-song musical cycle.