Singing someone else’s song in front of others is read as finding your voice through borrowed words. A karaoke bar can stand for playful courage or for the fear of being heard.
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.