The three String Trios, Op. 9 were composed by Ludwig van Beethoven in 1797–98. He published them in Vienna in 1799, with a dedication to his patron Count Johann Georg von Browne (1767–1827). They were first performed by the violinist Ignaz Schuppanzigh with two colleagues from his string quartet. According to the violinist and conductor Angus Watson, these were probably Franz Weiss on viola and either Nikolaus Kraft or his father Anton on cello. Each of the trios consists of four movements:
| Date of composition | 1797 |
| First published | 1799 in Vienna, Austria |
| Type | String Trio |
| Tonality | C Minor |
| Catalogue | Op. 9 |
| Instruments |
Violin
Viola Cello |
| Autotranslations beta |
Ludwig van Beethoven: Three String Trios n°5 en do mineur, Op. 9 Ludwig van Beethoven: Three String Trios n. 5 in do minore, Op. 9 Ludwig van Beethoven: Three String Trios Nr. 5 c-moll, Op. 9 |