Please answer the following question: What type of details about william coulter  can be gathered from the following bio?  Bio: william coulter is a celtic guitarist , performer , recording artist , and teacher . since 1981 he has explored the world of traditional music as a soloist with ensembles including isle of skye , orison , and the coulter-phillips ensemble .
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- instrument - years active - origin - genre - birth date - name - background - associated acts - occupation