LoL sounds like something eric cartman whould say

 

If there's food in your piano, I think we know why there's a mouse in there.

*assumes you meant "wood"*

Seriously, though, get one of those humane clear plastic box traps with the one-way door, stick a bit of PB & cracker in the trap, and put the trap in your piano. I know my Wal-Mart sells those traps, so they should be easy to find.

Just don't make the mistake I did, and think you can get a cheap sticky trap and free the mouse easily once he gets stuck. Damn near broke the mouse's legs getting him off of there.  

 

No, I meant food. I have lots of food stuffs on my desk that is less than 10 feet from the piano.

 

Play some first person shooters. You've got a wicked keyboard/mouse combo going on, there.  

Seriously, move all food out of the area. That means, stop using your desk for a pantry. The less inviting the area is to the mouse, the more likely it is that it will move to a different part of your house.

 

I use sticky traps to catch spiders, but on occaison, they catch mice.

Not humane, but it works.

 

Oh. Well, then, yeah -- like Greyryder says -- move the food. The mouse has found himself a nice roomy house across the street from a free grocery store. I suspect he's snagged some tidbits even if you haven't seen evidence.

And use the plastic box trap.

 

Exactly what I was thinking.