Lightning to MIDI Cable [Apple MFi Certified] USB Type B Cord for iPad/iPhone, MIDI Cord for Midi Controller/Electronic Music Instrument/Piano/Midi Keyboard/Recording Audio Interface/USB Microphone : Amazon.co.uk: Musical Instruments & DJ
IK Multimedia - iRig Keys I/O
plugKEY - MOBILE MIDI/AUDIO | KORG (USA)
Dorico for iPad with NI M32 - Dorico - Steinberg Forums