Novation Bass Station II not recognized

[lava]

I'm using a Motorola Droid Maxx with Android 4.4.4. I know I'm using the correct OTG adapter because I have two other USB sound cards that work with the phone no problem using that adapter. And I have since realized that the USB port on the Bass Station is only a MIDI device, there is no audio, so I would only want to get the MIDI capability working.