Minimizing Forgetting of Academic Learning, in other words... Make Learning Fun. Anytime you can put a song to a concept, a toy, or an activity to help with understanding it makes the task of learning fun. I remember as a girl learning multiplication with a little toy you could the tab down to check your answer. I recently stumbled across one in a toy store and picked it up for my third grader. He has been playing with it ever since.
Very often in my music class I will review a past concept before introducing a new one, this definetly helps when explaining the new concept.