accompanist

The art of conducting goes frequently with that of accompanying, and he was an excellent accompanist.

"I never thought of that; I could have judged better of your voice if we had had an accompanist," said her host.

She was the best accompanist he had ever had, and an extremely nice girl—not a bit like her cub of a brother.

He used to be good enough to work with me when I could not afford to have an accompanist for more than two hours a day.

The star accompanist aspires to the same mastery when he plays for a famous singer or instrumentalist.