The term 'CONDUCTOR'S BEAT' refers to the TEMPO of a musical performance, which is determined by the conductor. The TEMPO is the speed at which a piece of music is played and is usually indicated by a metronome marking or a TEMPO marking such as 'ALLEGRO' or 'LENTO'. The TEMPO is an important part of the musical performance and can be adjusted by the conductor to create the desired effect. The term 'CONDUCTOR'S BEAT' is derived from the fact that the conductor is responsible for setting the TEMPO of the performance.