I sometimes use a piano in my sessions when working with addicts or any other instrument. I do not play myself, I get those who do to take a journey with the wood from the piano or guitar by getting them to tell the story of the wood.
They must not play any know score it has to come from the heart, and the story starts from when the wood of the piano was but a seed in the forest and they have to tell the trees story as it grows up to when it was cut down taken away and is then made into a piano.
In other words from death comes new beginnings and that is the same with their addiction. I have experienced some amazing miracles taking place when doing this exercise. There is more to it than just these few words, but I think you will get the idea.