By clicking on the picture above, you will be directed to BIG JIM'S website, which includes sample tunes of his music. He uses music to help students grasp difficult concepts in other subject area's. This is not a free resource, but may be worth the $10:00.

Or better yet, why not use this ideas as an inspiration! One could have their students create songs for concepts that they are struggling with. They could be split up in groups and each have a different concept the make a song about. This would be a creative way to help student's work out the concept in their heads.