Symphony no. 9 in D minor, op. 125

Symphony No. 9 in D minor, Op. 125 is a symphony by Ludwig van Beethoven, completed and first performed in 1824. The work, Beethoven's final completed symphony, broadens the symphonic form by integrating vocal soloists and a chorus in its final movement, combines late-Classical structural clarity with emerging Romantic harmonic and textural expansiveness, and features extensive thematic development and contrapuntal writing.