Place a good dynamic mic pointing at the middle C from a distance of about six inches, no more than a foot inside the piano. Place a second mic preferably a condenser pointing at the open sound soundboard from a distance no closer than three feet and no further than six. The BG4's sound really sweet with a violin. Set at a distance of four feet from the player. The mic's should be spaced five feet apart and focused on the players chest. Please ask the violinist to stand when she plays preferably standing on a small mat. Violins always sound better recorded in the standing position.