It depends on what you're playing. Example: If you are playing a tone-pattern that uses the tones G, A, B, C, D, E, F#, G, then you're playing in the key of G, since all those tones are in the G-scale.
Press the keys
Anybody that knows how.
When you play a piano you hit the keys. When you hit the keys you trigger little hammers that hit strings in the piano which vibrate and the pitch depends on the diameter and length of the string.
I really do not think it can be done. At one time, piano keys were made from ivory. If the ivory began changing, you could do things to it to keep it white. Today's piano keys are made of plastic. There is nothing you can do with yellowed plastic piano keys. Throw them away and replace them with new, white, plastic piano keys.
They are used to play sharps and flats.
you press the keys
If you don't know how to actually play piano, here is how you can play it by counting the keys. 1324354657688675645342311
There are 88 keys on a piano (52 white keys and 36 black keys).
the black keys on the piano are sharps and flats. If the note is flat they you will play the next key to the left. If they note is sharp, you will play the next key to the right.
its simple you play the keys and the song comes out
To play a Yamaha piano: Sit with proper posture. Familiarize with the keys. Place hands correctly. Press keys to produce notes. Practice simple melodies and chords regularly. Explore different sounds and settings.
An accordion with keys like a piano so that you can play individual notes as well as chords.