He is playing the keyboard in normal arranger style. It's not a midi file . it's a style that is on the keyboard. He's playing the left-hand chords and soloing with his right hand and using the pitch bend wheel between chords. Peter is truly a professional and I would pay to see and hear him play any time. He has the rare mix of being able to play classical straight up pieces to jazz funk to blues to literally any style professionally and at a high level Without sounding contrived or cheesy.