Solo concert pianists, by convention, are not permitted to use musical scores during their performances. However,most members of chamber groups and orchestras are permitted to use sheet music during performances and perform well as a result. Why is this?Audience expectations are one reason The piano solo- ist is expected to know both the piano score and the orchestral score by heart. This allows for a high degree of collaboration during a performance. The orchestra does not move in lockstep behind the piano soloist. Instead, the soloist __ Which choice most logically completes the text? A is considered more experienced than typi- cal members of the orchestra, who require a musical score. B uses a musical score in the same way as does a member of a chamber group or orchestra. C deals with a less complex instrument as a single performer, while the orchestra must manage mass coordination despite boasting a variety of instruments. D is expected to adjust their performance to best match the orchestra and the acoustics of the hall.