The baton is a thin stick, often made of wood or metal, that the conductor uses to:

* Communicate tempo: The conductor's movements with the baton set the pace of the music.

* Signal dynamics: The conductor uses different motions to indicate loudness or softness.

* Shape phrasing: The conductor can use the baton to guide the musicians in how to phrase the music.

* Clarify rhythm: The conductor can use the baton to emphasize certain beats or rhythms.

* Coordinate sections: The conductor uses the baton to ensure that all sections of the orchestra are playing together in time and with the correct dynamics.

While the baton is the primary tool, conductors also use their body language and facial expressions to communicate with the orchestra.