Terms for letter: X
The letter "X" often marks the spot and can be directing you to look closely at the symbolism to find direction. It can also symbolize closing or blocking yourself from opportunity that is right in front of you.
To see something revealed by an X-ray can portray your desire to look deeper at a situation. Noticing that something is invisible, or seeing only the outline of bones and organs can show how you remain unconscious of how you have structured your sense of Self to please others. Having X-ray vision shows willingness to see the truth of what the symbol you are seeing through - represents.
Playing a musical instrument in a dream is the easy expression of your passions and feelings. Playing a xylophone represents harmony in expressing the individual areas of your life. If only one tone or one 'key' becomes the focus of the dream, you may be questioning your ability to get some aspect right so that your life 'plays in harmony.' A broken xylophone can symbolize depression. If you are dreaming about it - you might want to examine whether or not you are happy.