Personalized Music Universal Language Quote Toddler Long Sleeve T-Shirt. Henry Wadsworth Longfellow quote says Music is the universal language of mankind. Cool musical Toddler Long Sleeve Tee - White gift for the musician, singer, band director, music teacher and more. 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.