It is used for rhythmical accompaniment during dances, soloist or choral singing. The piano soloist was the composer himself. The piece is written for full choir, organ, and a treble or soprano soloist. The slow movement is a dramatic dialogue between the soloist and the orchestra. Each film calls for at least one soprano and/or alto soloist and one boy soloist. In addition, there are several single-movement works for soloist and orchestra. He focused instead on his career as a piano soloist and writer of concertos. A recital is a concert by a soloist or small group which follows a program. His scat singing style was enriched by his matchless experience as a trumpet soloist. Beethoven's five piano concertos increase the technical demands made on the soloist. In the beginning he was the main trombone soloist of the band. Some arrangements were built entirely around a featured soloist or vocalist. Other notable performers include erhu soloist Xiaochun Qi. Its main characteristic is the alternance of improvised verses between a soloist and a choir. She is a veteran dancer who has had notable successes as a soloist.