The core of his oeuvre is his set of seven symphonies, which, like his other major works, are regularly performed and recorded in his home country and internationally. His other best-known compositions are "Finlandia", the "Karelia Suite", "Valse triste", the Violin Concerto, the choral symphony "Kullervo", and "The Swan of Tuonela" (from the "Lemminkäinen Suite"). Other works include pieces inspired by nature, Nordic mythology, and the Finnish national epic, the "Kalevala", over a hundred songs for voice and piano, incidental music for numerous plays, the opera "Jungfrun i tornet" ("The Maiden in the Tower"), chamber music, piano music, Masonic ritual music, and 21 publications of choral music.