Posture (for Piano)

1. Make sure you are about eighteen inches from the piano. Most people tend to sit too close to the piano; when playing, your elbows should be at about a 120-degree angle. A good rule of thumb is to stretch your arms out, and your fingertips should just barely be touching the lid of the piano (or the control panel of an electric keyboard).
2. Keep your shoulders completely relaxed. Your arms are just hanging loosely.
3. Your fingers will rest on the keys in a relaxed C-shape, about the size of a baseball. The curvature varies depending on what you're playing, but your fingers should not lay flat. However, you're going to be playing with the pads of your fingers, so make sure they aren't curved so much that you play with your fingertips.
4. Keep your back upright, with your feet flat on the floor.