Then loop one end of the string around one index finger and the other end around the other index finger. Put your fingers in your ears and bang the hanger against a table. The sound waves from the vibrating hanger travel through the string and into your ear. Do the same thing with a metal spoon. Now try experimenting.
Different materials vibrate differently.
See if you can hear a difference in the way a muffin tin sounds. Make a prediction. Be sure to tell us what you thought was going to happen and what actually did happen. When you're done, send your reports to our special feedback area. Every week we'll post new results from ZOOMers' Stereo Hanger experiments.