The music room is read as harmony, expression and practice. Playing well there is seen as inner balance; a silent or out-of-tune room as a creative voice waiting to be used.
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.