Ludwig van Beethoven was a well-known composer of the late Classical period. His music was heavily influenced by his predecessors Mozart and Haydn. A symphony is a piece of music for an orchestra.

LOGES, NATASHA 2024. Letting Beethoven’s Hair Down: Dancing and Musicking in Vienna. Journal of the Royal Musical Association, p. 1.

the first chords ring out in a Lausanne concert hall of what could conceivably be an extract of Beethoven's Tenth Symphony – if the great German composer had ever managed to complete the piece.