Beethoven composed symphonies, overtures, dances, ballets and battle music for grand orchestra. He often deviated from the standard ensemble of a symphony orchestra consisting of a string orchestra (five voices), matched woodwinds (two flutes, two oboes, two clarinets and two bassoons), brass players (two bugles, two trumpets) and kettledrums by omitting or adding instruments and voices. For his 9th Symphony, he was the first composer ever to use solo singers and a choir.
Beethoven's instrumental music also includes marching music and dances for military or brass bands. As distinct from the symphony orchestra, this type of orchestra has no strings but only woodwind and brass instruments as well as percussion.