You Are My Sunshine began as a beloved American folk and country standard, sung for generations as a lullaby, singalong and comfort song, and covered by countless artists in many different styles. This disco version keeps that familiar melody but rebuilds it for short-form video, with a dance beat that suits quick cuts and upbeat edits. It has spread mainly through TikTok, where creators pair it with happy, nostalgic or feel-good content, and it remains popular because the tune is instantly recognisable even when the arrangement feels fresh and modern.