Hello there.
I'd be happy to produce this content for you. I have two friends who play guitar and piano. They're both attractive. Alternatively I have a number of actresses/model friends who could imitate playing these instruments if audio isn't needed.
If you require audio capturing, what piece of music do you want them to play?
If this isn't important, are you happy with a royalty free piece? Or a piece they have written themselves?
Are their any costume requirements?
Are there any location/set requirements?
If I was to do this project without these questions answered, I would have them both play in an audio controlled environment such as a living room, kitchen, bedroom, etc. (although for another $100 this is doable in a studio). I would have them play a piece of music they come up with. I would have them play a 2-4 minute track.
Please get in touch and we can discuss this further.
All the best,
James.