Personalized Slanted Tuba Text Youth Long Sleeve T-Shirt. Slanted tuba text with a tuba on top of the B is a unique music design. Fun gifts for musicians, students and teachers at marching band, back to school, 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)