Hello
I can craft for you exactly the kind of classical music creation for piano that you desire, and deliver it, just as you require, in a Sibelius file.
I am a music composer and arranger with more than two decades experience. I am a classically trained pianist, and have been playing the piano since I was three. Most of the music I write is either classical or has a classical feel to it, and I write much for the piano.
You should be aware that the creation you seek is neither a trivial nor a quick task, but a highly creative one, requiring much knowledge of the classics and great ingenuity. For this reason, if I am to do this for you, I will require time - time for inspiration and to assemble the appropriate components matched in tempo and key, and time to work these into a single, coherent whole.
For the same reason, my bid is not trivial - but I am willing to discuss both time and fee.
I would also ask if you and or your son have particular composers or works you might like included in such a piece.
Thank you for your consideration