harmonica holder/cup for shure sm58 type mic hands free cupped sound !! | eBay
HarpLock Hands-Free Magnetic Harmonica Holder. Replace your Rack! | eBay
Dyna-Mic cups your harmonica for better tone, no feedback
BlowsMeAway Productions - I'm very proud to announce Rackit!™ 2.0. Rackit! as many of you know is a hands-free harmonica microphone for diatonic harps that can be used on a neck rack
HarpArm Hands-Free Harmonica Holders
Rackit!™ Harmonica Microphones by BlowsMeAway This Is The Old Version – RockinRonsMusic