Do you notice this at any particular time of day, Ellie1965 and do you have any sort of coping strategy? If I get this, it's very often in the mornings, which can make being on the ball to play for Sunday morning services (I'm an organist) quite a challenge. My coping strategy involves book-marking all the hymns, highlighting everything I've got to play in the service sheet, and taking regular sips from a glass of cold water throughout the service. That way, I have more of a chance of staying on top of things......................!