I was in graduate school, then I have a one year medical leave of absence. Afterward I played instruments (which my instructors can attest, and possibly can support me), traveled, and wrote (which I can put together a pro folio) for one year. I want to know if I should mention them when I apply for graduate school in a different program or work. I am in the U.S., and I have to explain gaps in my resume and CV. Which facts (if any) should I leave out? Should I explain why I took the leave, and how it affected my former schooling? How can I get to the point without getting into irrelevant details?