Piano MIDI Bluetooth USB

I finally found an app that can do (almost) everything I have been looking for ! Unfortunately the ROLAND RP102 digital piano, which I use with a community choir doesn't allow easy straight forward playback of external MIDI songs like accompaniments (not even with its own PianoPartner2 app). So I have been looking for an app that plays back and sends a MIDI file to the RP102 so that the keyboard's sounds are used for playback. While I haven't been successful connecting MIDI OUT via Bluetooth (MIDI IN works fine), connecting the RP102 via USB cable made it possible to have both MIDI in and out working fine, and I can play back any MIDI file from my device. Thank you ! Recommendations of features I'd love to see in future versions would be: - A screen where I see neither keyboard nor score but just a progression / timeline indication which one can slide to get to certain positions in the song - sliders to work smoothly (maybe an issue of my phone and not of the app though I don't experience it with other apps): The volume slider doesn't work for me most of the time. The speed slider under settings though does. If I come up with other ideas I'll let you know :-) Thanks

Fantastic app!! I have been looking for months for such an app to use with my Yamaha PSR-EW410 keyboard and the Yamaha UD-BT01 MIDI Bluetooth adaptor, Yamaha was of no help, they seem to support iOs stuff only/mostly but this app just worked. It has a couple of bugs, but I'm sending bug reports to the author.

The piano sound in Bluetooth is late asf it's annoying. I press a key and only hear it 1 second after its annoying

Doesn't work for my Roland fp-30, says it's connected, but no input from device

doesn't work keep asking for location sus data sucking

Mattering delay between usb device and real sound