"Franz Ignaz Danzi (June 15, 1763 – April 13, 1826) was a German cellist, composer and conductor, the son of the noted Italian cellist Innocenz Danzi. Born in Schwetzingen, Franz Danzi worked in Mannheim, Munich, Stuttgart and Karlsruhe, where he died.
Danzi lived at a significant time in the history of European concert 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. As a young man he knew Wolfgang Amadeus Mozart, whom he revered; he was a contemporary of Ludwig van Beethoven, about whom he—like many of his generation—had strong but mixed feelings; and he was a mentor for the young Carl Maria von Weber, whose music he respected and promoted." [Wikepedia]
"El destacado clarinetista Luis Rossi interpreta de Franz Danzi su "Variaciones sobre un tema de Mozart"." [The outstanding clarinettist Luis Rossi plays Franz Danzi in his" Variations on a Theme by Mozart .]