Personalized Royal Trombone Youth T-Shirt. A trombone with the word trumpet wearing a jeweled crown is a humorous music design for horn musicians for marching band, back to school and graduation. 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.