Pure antidote at this point, but I would say that if listening to music protects the aging brain, then playing an instrument improves the aging brain.
I noticed my brain fog disappear after a few weeks of learning the flute. I attributed it to getting more oxygen. In those first few weeks my lungs would cramp up often and I would get dizzy, I was not used to the oxygen!
I have felt less clumsy since learning the flute, and I attribute it to taking a slightly larger breath on the average, and in general just being more aware of things.