An encore is read as being asked for more — appreciation and the joy of an experience that is not over yet. It can also stand for a reluctance to let a good moment end.
When this appeared in your dream, what were you feeling?
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.