Personalized Tuba Color Block Youth Long Sleeve T-Shirt. Tuba text with a decorative line sporting a music note in a block of color is a unique gift design for low brass musicians, students and teachers at back to school, marching band camp, birthdays, holidays and graduation. youth long sleeve t-shirt. Shoulder-to-shoulder taping. Youth: S(6/8), M(10/12), L(14/16), XL(18/20)