 In a piano-conductor score, orchestral part entries are usually visibly tagged in the third staff.While piano-vocal scores provide a full accompaniment for rehearsals, reduced performances, etc., piano-conductor scores give the conductor a more direct view of the activity of the orchestra, without being as complex as a full orchestral score.This is especially relevant when the conductor is conducting not from the podium, but from the piano while playing the indicated piano part (often seen in musical theatre orchestras).