How to Connect Your Digital Piano to a PC/iPad/Android Device
Amazon.com: Lightning to MIDI Cable for iPad/iPhone, [Apple MFi Certified] USB - B Midi Cord for Midi Controller, Electronic Music Instrument, Piano, Midi Keyboard, Recording Audio Interface, USB Microphone : Musical Instruments
Yamaha P-45 88-key Digital Piano with Speakers | Sweetwater
Connect Yamaha P-45 Piano to iPad Headphones - Simple Mics