Personalized Trumpet Halloween Cobwebs Youth Long Sleeve T-Shirt. Trumpet in cobweb text with the image of a trumpet covered in cobwebs is a humorous Halloween gift design for brass musicians, school music teachers and students in concert, jazz and marching band. youth long sleeve t-shirt. Shoulder-to-shoulder taping. Youth: S(6/8), M(10/12), L(14/16), XL(18/20)