I just don't think the instrument petting zoo would give one the same experience as petting a soft purry Jack-Jack. Hedgehog is giving a demonstration of the way our cat likes his chin scratched. From the bottom picture you can see he's not as fond of head scratching v. chin scratching. (When he really likes something he squints his eyes-it's very cute-and he starts a deep purr.)
Kudos though to Riverton Music for a clever idea that certainly caught the attention of our patrons. For more information about Riverton Music you can visit their website at: https://www.rivertonmusic.com/