In our study on Marie Curie (who was studying magnets and steel when she met her future husband Pierre, who was exploring crystal structures at the time), we did a little exploring with magnets of our own, including learning about how disrupting a magnetic field with your body can create music (if you have a theremin... )
Very speedy discussion of how the theremin works
And an example of how amazing music out of thin air can be...
Hope you have as much fun listening to these as we did. Let me know your thoughts in the comments if you like. :)