What is you are my sunshine about?

"You Are My Sunshine" is a popular American folk song that has been covered by numerous artists throughout the years. It was first recorded in 1939 by Jimmie Davis and Charles Mitchell. The song has a nostalgic, sentimental tone and has been popular as a lullaby or love song. The lyrics speak of the love and devotion between two people, with the chorus repeating the phrase "you are my sunshine, my only sunshine." The song has become a beloved classic and has been featured in numerous films, TV shows, and commercials.