Personalized Sousaphone (white) Toddler Long Sleeve T-Shirt. Display your pride for your Sousaphone skills with this drawing on Toddler Long Sleeve Tee - Heather with the word "sousaphone" resting on it. Also makes a unique gift for low brass musicians, music teachers and students at back to school, graduation, birthdays or holidays. A classic for Fall, Winter and Spring, these long sleeve toddler t-shirts are sure to be a staple in your child's wardrobe. Whether layered or alone, this t-shirt is soft yet durable enough to stand up to your toddler's playtime demands.