Once a hunting call, the French horn is read as a summons from far away and a noble, warm resolve. Dream books link it to longing for distant places and to a call you feel drawn to answer.
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.