What does this mean in a piano sheet music?

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what is this? on the sheet music there's this above the 2 clefs, do you play it or what? what do the little grids do?





What does this mean in a piano sheet music?
Those are guitar chords, B7 and EmWhat does this mean in a piano sheet music?
haha those are the chords for if you were playing guitar


it doesnt have anything to do with the piano

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