A wise snowman once said, "Some people are worth melting for." For many dads, that someone is their daughter. There really isn't anything a father won't do to make his little girl happy and put a smile on her face. In the case of these dedicated dads, that means memorizing the lyrics to a Frozen song [1] and creating a video for millions to see. While some may say it's silly (and to an extent, it is), we think it's the sweetest thing in the world. Don't believe us? Just in time for Father's Day [2], we can't stop watching the greatest father-daughter Frozen duets of all time!