He was born in Pest, Austria-Hungary, where he began the study of music at a very early age. When only seven years old, he could pick out at the piano melodies which he had heard in the theatre. At 15, he became a student of harmony and counterpoint under Nicolitsch. He attended the normal school at Pest for three years, the gymnasium for eight years. At age 16 he had been thinking of becoming a priest. Seidl entered the Royal University of Pest, but his love for music prevailed and he left the university two years later to go to Leipzig, where he studied at the Leipzig Conservatory from October 1870, remaining there until 1872, when he was summoned to Bayreuth as one of Richard Wagner's copyists.
At Bayreuth, he assisted in making the first fair copy of Der Ring des Nibelungen. Wagner treated him as one of the "chosen few", and it was natural that he should take a part in the first Bayreuth Festival in 1876. Wagner then sent him to Vienna to stage Siegfried and Götterdämmerung there, the last two of his operatic tetralogy, Der Ring des Nibelungen.
His chance as a conductor came in 1879 when, on Wagner's recommendation, he was appointed to the Leipzig State Opera. In May 1881, he introduced in the Victoria Theatre, Berlin, the complete Ring tetralogy for the first time. In 1882, he went on tour with Angelo Neumann's Nibelungen Ring company. The critics attributed much of the artistic success that attended the production of the Ring at Her Majesty's Theatre in London in June of that year to his conducting. In 1883 Seidl went with Neumann to Bremen, and in 1884 he married Auguste Kraus in Frankfurt, a distinguished singer of the German Opera Company.
In 1885, after Leopold Damrosch’s death Anton Seidl accepted the first conductor’s position of the German opera in New York, then domiciled at the Metropolitan Opera House, where Seidl made his debut with Wagner’s Lohengrin on 23 November in 1885.
Seidl, as celebrated conductor of the musical life in New York, became the music director of the New York Philharmonic in 1891, where he remained until his death in 1898. During his tenure, the Philharmonic enjoyed a period of unprecedented success and prosperity. Under his baton the orchestra played for the first time in Carnegie Hall on 18 November in 1892. While in New York, he conducted the world premiere of Antonín Dvořák's Symphony No. 9, "From the New World", which greatly influenced the direction of American classical music. Dvořák had added that subtitle to the title page of his autograph score in Carnegie Hall just before turning it over to Seidl.
He also had a significant role in the genesis of Edvard Grieg's Lyric Suite. It started as Seidl's orchestrations of four pieces from Book V of Grieg's Lyric Pieces, which he put together as Norwegian Suite. While Grieg acknowledged the merit of the arrangements, he nevertheless chose to revise them in 1905, and published three of them, along with an arrangement of a fourth piece he made himself directly from the original piano score, into his own Lyric Suite.
On March 28, 1898, Seidl died from food poisoning (then erroneously called "ptomaine poisoning") reportedly caused from eating a serving of tainted fish. He was only 47 years old. Several thousand people attended the memorial, held at the Metropolitan Opera House. He was an atheist.
- Szabolcsi Bence - Tóth Aladár (1965). Zenei lexikon. Seidl Antal. Zeneműkiadó Vállalat. p. III. k. 322.
- One or more of the preceding sentences incorporates text from a publication now in the public domain: Chisholm, Hugh, ed. (1911). "Seidl, Anton". Encyclopædia Britannica. 24 (11th ed.). Cambridge University Press. p. 586.
- Herbert, Victor. Anton Seidl: a memorial by his friends, ed. Henry Theophilus Finck, Scribner, 1899, pp. 27, accessed 30 August 2017
- Henry Theophilus Finck. Anton Seidl: a memorial by his friends. C. Scribner's Sons. p. 132.
- "NYPO concert on 1892. Nov. 18". New York Philharmonic Digital Archives. Archived from the original on 31 August 2017. Retrieved 30 August 2017.
- Classical Archives
- "Anton Seidl's Funeral". The New York Times. 1 April 1898. Retrieved 30 August 2017.
- Michael Steinberg (1995). The Symphony : A Listener's Guide: A Listener's Guide. Oxford University Press. p. 149. ISBN 9780199761326. "For all that Seidl's atheism made the devout Dvořák uneasy, the two men were good friends."