I played guitar in high school in a school band, and I used to know some classical songs, and classic rock tabs, but I quit practicing for many years. I hear practicing an instrument and learning a foreign language are two of the greatest ways to strengthen the frontal cortex of the brain. Learning tabs feels like solving a puzzle. I'm not the best or most natural speaker or conversationalist, and I prefer to express myself with an instrument. I've just ordered a high end condenser microphone so I can record covers and hear my voice sound better than usual. I'm going to learn to play Operator by Jim Croce. How else does practicing an instrument help someone recovering from a heavy addiction?