Julie London's song "Summertime" is a cover of the classic jazz standard written by George Gershwin and DuBose Heyward for the opera "Porgy and Bess." The lyrics describe the serene atmosphere of summertime, with the living being easy, fish jumping, and the cotton crops growing tall. It is a peaceful and carefree time. The next part of the lyrics reflect on the fortunate circumstances of the baby's parents. The baby's daddy is rich, and the baby's mama is good-looking. The song then reassures the baby, telling them not to cry and that there is nothing to worry about because their parents are there to protect them. As the song progresses, it suggests that one day the baby will rise up singing and spread their wings to fly, indicating a future of success and happiness. However, until that morning comes, the baby is safe and protected by their loving parents. The song overall conveys the joyful and optimistic spirit of summertime, presented through the lens of a lullaby, comforting the baby and assuring them of their parents' presence and love.