Mario,

Most people don't realise but making piano's is what Yamaha started out doing in the early part of the last century. Look at their logo and you will find that it comprises three crossed tuning forks.

I used to sell their grand and upright pianos and would rate them second only to the well known German Manufacturers.

Take the advice of the others on this forum and read up their long and succesful history.

You are a very lucky man.....

Regards - Keith