John Field (26 July 1782 [?], baptised 5 September 1782 – 23 January 1837) was an Irish pianist, composer, and teacher. He was born in Dublin into a musical family, and received his early education there, in particular with the immigrant Tommaso Giordani. The Fields soon moved to London, where Field studied under Muzio Clementi. Under his tutelage, Field quickly became a famous and sought-after concert pianist. Together, master and pupil visited Paris, Vienna, and St. Petersburg. Ambiguity surrounds Field's decision to remain in the Russian capital, but it is likely that Field acted as a sales representative for the Clementi Pianos.
Field was very highly regarded by his contemporaries and his playing and compositions influenced many major composers, including Frédéric Chopin, Johannes Brahms, Robert Schumann, and Franz Liszt. Field is best known as the instigator of the nocturne, but there is evidence to suggest that this is a posthumous accolade. Although little is known of Field in Russia, he undoubtedly contributed substantially to concerts and teaching, and to the development of the Russian piano school.
Notable students include Prussian pianist and composer Charles Mayer. See: List of music students by teacher: C to F#John Field.
Field was born in Golden Lane, Dublin in 1782, the eldest son of Irish parents who were members of the Church of Ireland. His father, Robert Field, earned his living by playing the violin in Dublin theatres. Field first studied the piano under his grandfather (also named John Field), who was a professional organist, and later under Tommaso Giordani. He made his debut at the age of nine, a performance that was well-received, on 24 March 1792 in Dublin. According to an early biographer, W.H. Grattan Flood, Field started composing in Ireland, but no evidence exists to support his claim. Flood also asserted that Field's family moved to Bath, Somerset, in 1793 and lived there for a short time, and this too is considered unlikely by modern researchers. By late 1793, though, the Fields had settled in London, where the young pianist started studying with Muzio Clementi. This arrangement was made possible by Field's father, who was perhaps able to secure the apprenticeship through Giordani, who knew Clementi.