Your platform is probably the Angel Melodyhorn AM-37K3, which is a clone or close copy of the Yamaha P-37D. The parts are pretty much interchangeable, Henry. I know because I experimented with them — See below. The reeds of the Yamaha are more durable and probably hold their pitch better, but the Melodyhorn has a very agreeable sound of its own. A different 37 key model of Melodyhorn may not have the same reed plates. You can probably find an inexpensive AM-37K3 if you watch for a bit on eBay.