Personalized Keep Calm Polka Toddler Dress. Funny novelty Polish music, German music, polka music, accordion lovers, polka band Toddler Dress - Heather with accordion graphic says KEEP CALM POLKA ON. Gifts for polka lovers, oompahpah, squeezebox players, polka bands and festivals. Your little one will be adorable and comfortable in this 100% combed ringspun cotton 1x1 baby rib dress!