Dream about writing music indicates your support system in your new endeavor. You are being too subjective in some matter. You need to work harder or be more effective at work. This dream refers to emergence of subconscious material and suppressed feelings. You are feeling hurt by the little things that may seem insignificant.
Writing music dream is a metaphor for changing of sides. Others are paying attention to what you have to say. You are trying to establish your identity and sense of self. It denotes forgiveness in an extreme way. You need to believe in yourself and in your abilities.
If you dreamt about writing music:
You may feel like a snail emerging from its shell. When no one is looking, you slowly and cautiously stick your head out and put up your antennae to take a reading on the outside world. When you see a creature like you, you feel comfortable and come out of your shell a bit more. Be careful about letting your defenses down too much, because a big, hungry bird may be looking for dinner.