repetiteur

noun, plural ré·pé·ti·teurs [rey-pey-ti-turz; French rey-pey-tee-tœr] /ˌreɪ peɪ tɪˈtɜrz; French reɪ peɪ tiˈtœr/.

1. the vocal coach of an opera chorus.

noun

1. a member of an opera company who accompanies rehearsals on the piano and coaches the singers