 This was the first time that a wireless microphone was hidden at the hairline – a now-common technique popularized in 1985 when Andrew Bruce pioneered a large-scale implementation for all of the principal performers in the original London cast of "Les Misérables".Jacob was asked to bring a more subdued, naturalistic tone to "A Chorus Line" which was supposed to look like an audition-in-progress for most of the show.Jacob put a row of shotgun mics at the front edge of the stage, and Bennett devised a choreography to fit the very visible microphone positions.