Any Suggestions for iPad Midi Player that supports Keyboard MIDI ports?

[Doyle2468]

I've looked on the App store and found iPad Midi players that will connect to keyboards via Network and Blue Tooth.

I want to play MIDI files using my iPad Pro through the MIDI ports on an old Yamaha keyboard (DJX PRS-D1). I have an iPad Pro with a USB Camera Adapter hooked to a USB to MIDI cable that plugs into the MIDI ports of the keyboard. I have successfully played tones on this keyboard with this setup using FifthDegree, a MIDI sequencer available in the App Store. I've tried many other MIDI players from the App store without success. Either I don't understand the subtlety of their interfaces or they don't support USB MIDI as an option. I want the player to be able to accept an existing MIDI file and ultimately play the keyboard.

Thanks for any leads.

[Doyle2468]

Answering my own question; I discovered an iPad App named midmittr than connects virtual output ports of supported Apps to USB MIDI ports. It enables Sweet MIDI Player to show USB MIDI as a Core MIDI type in its settings and play MIDI files on my keyboard that has actual MIDI ports.

I'm still looking for a MIDI recorder/player with which I can emulate the Yamaha MDF3 MIDI Data Filer so that I can do Bulk Dump Data Send/Load operations.