It could be any of the following:
Opera, oratorio, cantata, scena, song, chorale, mass, passion, vespers, litany ...
The list is not exhaustive!
A band? A choir? An orchestra?
Beethoven did not compose music for singers. He only composed symphonies for orchestras, piano sonatas for pianos, and violin concerto for orchestra and violin.
In classical music, a chamber orchestra. In jazz music, a big band. Groups of that size are also used in shows and as backing for jazz and pop singers.
band or orchestra or ensemble or duet or quartet are a few terms
The Trans-Siberian Orchestra does not lip-sync. They only play orchestral music with modern adaptations. There are no singers or singing in the Trans-Siberian Orchestra's performances..
Choral music
what is the population of music or singers? what is the population of music or singers? what is the population of music or singers?
Jubilance Singers & Orchestra is a musical missionary group that performs Christian music. They have an official website where one can go to find out more information about them.
concerto
The song is called Shake It Out by Manchester Orchestra.
Orchestra house
A band? A choir? An orchestra?