What is summertime by Janis Joplin talking about?

The song "Summertime" by Janis Joplin is about the joys and freedom of summer. It's about taking a break from the hustle and bustle of everyday life and enjoying the simple things in life, such as spending time with friends, going to the beach, and just relaxing. The song also captures the feeling of nostalgia and longing for summer when it's over and the colder weather sets in.