Personalized Keep Calm Polka Women's T-Shirt. Funny novelty Polish music, German music, polka music, accordion lovers, polka band Women's T-Shirt - White with accordion graphic says KEEP CALM POLKA ON. Gifts for polka lovers, oompahpah, squeezebox players, polka bands and festivals. Classic ladies' styling with a feminine neckline, sleeves and fit. 5.0 oz., pre-shrunk 100% cotton. Double-needle stitching throughout