Personalized Treble Clef Music Band Director Or Choir Youth T-Shirt. Treble clef symbol Youth T-Shirt - White for a drum major, choir director, singer, music teacher, marching band musician. Let the good times roll in a durable T-Shirt that takes kids from school to play in an amazing array of colors. 5.0 oz., pre-shrunk 100% cotton. Seamless 1x1 rib collar.