Recital in a Home

My son is going to be having a recital this Friday. He plays piano so not much action, but his moving fingers. This will be taking place at the home, of another student, that I've never been to. I have no clue of the lighting, but like most homes I'm sure it's dark like most, as seen through a camera. I'd like to record his performance using my 7D. His performance will be at most, 15 minutes.

I need some tips as far as settings. I know the info is vague, but that's all I have to work with. I cannot bring lights, but I will have a tripod and my camera. I don't have an external mic either.

I plan to set up my camera/tripod close to the piano so I'm guessing my 17-40 will will be my best choice from the lenses I own.

I know that this shoot won't be the greatest, yet If I get better quality than what I would with a ZR930 then I'll be happy.

Thanks for any help that you're able to provide.

A video of someone playing a piano from one position is likely to be devastatingly boring to watch. Perhaps consider telling a story with video clips over the playing - getting ready to leave, practicing etc. This will help give some latitude if the camera stops (as it will). Cut aways will also help as you can relocate or reframe.

To do all of this you need an external recorder to continuously record the music - I'm not sure you could get a usable recording of the whole recital without one.