I am new and have a question. The sheet music with the staves are shown below. I want to play the piano only part. Could someone tell me what chords (keys) to play for the attached piano part only?
Play the bottom two lines, which are the left and right hand piano parts. Above the whole lot, the chord symbols are written. So you have everything you need. Plus the top line, which is the lead vocal, usually.
Play the written parts, and they are exactly what's needed. They mirror the chord symbols above.
Your question is a bit difficult to understand, but I think you're asking whether or not to play the chords written in above. Short answer: no. Just play the bottom two staves, the piano part. The chords above are mostly for guitar. Although if you want to, you can add some of the chord tones to the piano part.