Rued Langgaard (; born Rud Immanuel Langgaard; 28 July 1893 – 10 July 1952) was a late-Romantic Danish composer and organist. His then-unconventional music was at odds with that of his Danish contemporaries but was recognized 16 years after his death. Life Born in Copenhagen, Rued Langgaard was the only son of composer and Royal Chamber musician Siegfried Langgaard (1852–1914) and Emma Langgaard (née Foss, 1861–1926), both of whom were pianists. At the age of five Rued began taking piano lessons with his mother, and later with his father and a private teacher. His talent emerged quickly, and at seven he was able to play Schumann's Davidsbündlertänze and Chopin's mazurkas. By then he had begun to compose short pieces for the piano and play the organ. At 10 he began to study the organ under Gustav Helsted, organist at the Jesuskirken in Valby, and the violin under Chr. Petersen, formerly of the Royal Orchestra. At the age of 11 he made his first public appearance as an organist and improviser on the organ at a concert at the Frederikskirken (Marmorkirken) in Copenhagen. When he was 12, he started to study music theory under C. F. E. Horneman and, later, Vilhelm Rosenberg. Langgaard's first compositions, 2 piano pieces and 2 songs, were published when he was 13, and around that time he was taught counterpoint by the celebrated composer Carl Nielsen for about a month. A year later, his choral work Musae triumphantes was performed at a concert in Copenhagen, marking his public debut as a composer. During his teen years he continued composing and travelled with his parents around Christmas and New Year's Eve, meeting conductors Arthur Nikisch and Max Fiedler. At 18, Langgaard served as assistant organist at the Frederikskirken (Marmorkirken) in Copenhagen. The following year (1913) his Symphony No. 1 "Mountain Pastorals" received its first performance at a concert in Berlin with the Berlin Philharmonic under the baton of Max Fiedler. His father died in 1914, and from 1915 to 1917 he was assistant organist at the Garnisons Kirke in Copenhagen. From 1917 onward he applied without success for the post of organist at a large number of churches in Copenhagen. In 1922 a young woman named Valborg Constance Olivia Tetens (she was known as Constance) moved in with Rued Langgaard and his mother in Copenhagen. A year after his mother died in 1926, Langgaard married Constance Tetens.