Personalized Polka Music Matters Youth T-Shirt. Funny novelty Polish, German, Czech polka dancing Youth T-Shirt - Vintage Hot Pink with accordion graphic says POLKA MUSIC MATTERS. Gifts for polka lovers, oompahpah, squeezebox players, polka bands and festivals. Let the good times roll in a durable T-Shirt that takes kids from school to play in an amazing array of colors. 5.0 oz., pre-shrunk 100% cotton. Seamless 1x1 rib collar.