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?
All 3 staves are the score, with the top staff (a solo) being assigned to a single instrument/voice, and the bottom 2 staves (accompaniment) being assigned to a keyboard.
The chord symbols written above the top staff describe the harmony occurring from the point where a chord symbol is written until the next chord symbol. The chord symbols are, apparently, for a guitar to play an accompaniment, either along with the keyboardist or as the only accompanying instrument.
The chord symbols could also assist the keyboardist in improvising additional notes in the accompaniment, if the keyboardist wanted to fill out the texture.
Alternatively, a keyboardist could ignore the bottom two staves and improvise an accompaniment based solely on the chord symbols, as a jazz pianist might in a jazz ensemble. By approaching the accompaniment in this way, you could play notes within the chord that are higher or lower than those written in the keyboard part. You could add more notes per beat (see how the first keyboard chord in the second measure is a half note; that could be two quarter notes or four eighth notes). If you are going to try improvising, I recommend you keep the bass notes as written, as they are the most important voice after the solo voice. The bass line and the solo are a duet. Improvise only the right hand based on the chord symbols.
The chord symbols are accurate for the two measures you show here, but do not take into account rhythms that appear in the keyboard part.
Gsus/B is a perfectly legitimate guitar chord and jazz chart or lead sheet chord. If you break down Gsus/B, reading from left to right, it means: [G] a G major chord, [sus] a 4th above the root (G) instead of a 3rd, so a C instead of a B; [/] over; [B] a B in the bass; the 5th above the root (G) is implied and is a D.
If you look at the keyboard part that's exactly what you have: a B in the left hand or the bass, and G-C-D in the right hand.
The [sus] literally means a suspended note from a previous chord, in this case the C which was in the previous C Major chord, and [sus] almost always means a 4th instead of 3rd in the chord. The C should resolve to a B in the next measure, which we do not see in your example.
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.