Hm.... I could help you, but it depends how complex the piano music is. I have perfect pitch - this means that I can correctly write down any note I hear. I also have a program that I can enter the notes into (so I can send a electronic copy of the piece to you), and I have transcribed pieces before - so it's possible that I could do it for you. I can't register big chords or very complicated things with a lot of notes happening at once - so it depends on how busy your piece is.