Franz Ignaz Danzi (15 June 1763 – 13 April 1826) was a German cellist, composer and conductor, the son of the Italian cellist Innocenz Danzi (1730–1798) and brother of the noted singer Franziska Danzi.
Danzi lived at a significant time in the history of European music. His career, spanning the transition from the late Classical to the early Romantic styles, coincided with the origin of much of the music that lives in our concert halls and is familiar to contemporary classical-music audiences. before he joined the superlative orchestra of the Elector Karl Theodor in 1778 as a teenager.
In 1780, the first of his woodwind compositions was published at Mannheim. His father, principal cellist of the orchestra, was praised by Mozart for his playing at the premiere of Idomeneo. Danzi remained behind in a Mannheim that was rendered more provincial when Karl Theodor moved his court to Munich in 1778. After an apprenticeship with the small theatre orchestra left in Mannheim, he rejoined the main court in Munich as principal cellist — taking his father's position — in 1784.
In 1790, he married the singer and composer Maria Margarethe Marchand, with whom he travelled in an opera troupe to Leipzig, Prague, Venice, and Florence.
By 1798, once more in Munich, he rose to the position of assistant Kapellmeister in one of the most important musical centers of Europe. In 1807, unhappy at the treatment he received at court and despairing of any further advancement, he left Munich to be Kapellmeister in the smaller and less important Stuttgart court of the new king of Württemberg, Frederick I, where he supported and influenced the work of Carl Maria von Weber.
In 1812, he moved again to Karlsruhe, where he spent the last years of his life at the Royal Konservatorium struggling to raise the modest courtly musical establishment to respectability.
Death
On April 13, 1826, he died in Karlsruhe, aged 62.