Hey there, Some things kind of jump out at me and I just wanted to let you know about them. If you get an experienced person to do animation, you're looking to spend a good amount. You're also looking at way past an hours work to do the walk alone, unless you want subpar work.
I'm a programmer working on a "learn to play the violin" game. I've looked into making a model myself but it's not really my field. High quality is not necessary at this point and using available, open source art assets (like a vocaloid model and a free violin by someone else) is fine. There's some free (I think) examples…