I usually break the the dream down to different parts and its puts a story together of where the fantasy comes from.
Small example with music, musician, and projector would be. I
To hear harmonious and soothing music in your dream signifies prosperity and pleasure. You are expressing your emotions in a positive way. Music serves to heal the soul.
If you are not a musician in your waking life, but dream that you are one, then it implies that you need to be more expressive about your feelings.
To see or use an overhead projector in your dream suggests that you need to "project" yourself. You need to make your presence known and your voice heard.
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