He was the son of Liisa Häyrynen and the famous romantic composer, professor Oskar Merikanto. His childhood he spent in Vilppula, Finland. From year 1919, he was married to Meri Grönmark.
Paavo Heininen (1938-) studied with AarreMerikanto, Einojuhani Rautavaara, Einar Englund and Joonas Kokkonen at the Sibelius Academy in Helsinki, with Bernt Alois Zimmermann in Cologne and with Vincent Persichetti at the Juilliard School of Music in New York.
AarreMerikanto (1893-1958) studied with Erkki Melartin in Helsinki, with Max Reger in Leipzig and with Sergei Vasilenko in Moscow.
Einojuhani Rautavaara (1928-) studied at the Helsinki University, with AarreMerikanto at the Sibelius Academy, with Vincent Persichetti at the Juilliard School of Music in New York, with Roger Sessions and Aaron Copland in Tanglewood, with Wladimir Vogel in Ascona and with Rudolf Petzold in Cologne.