Improvisation is the heart of jazz, so a jazz club is read as living without a script and trusting your own rhythm. It can also stand for intimacy, mood and an older, smokier kind of freedom.
Has this come up in your dreams before? What was going on in your life then?
My Cosmic Code has a private dream journal. Write a dream down and the app picks out the symbols in it, shows what dream books say about them and, over time, which words recur across your entries. The journal is stored on your device only.