The ornamental design for a keyboardcover for electricpiano, as shown and described.
FIG. 1 is a perspective view of a keyboard cover for electric piano showing our new design,
FIG. 2 is a reference perspective view of an electronic piano in which the keyboard lid is closed.
FIG. 3 is a front view of an electronic piano.
FIG. 4 is a front view of an electronic piano in which the keyboard lid is closed.
FIG. 5 is a rear view of an electronic piano.
FIG. 6 is a plan view of an electronic piano.
FIG. 7 is a plan view of an electronic piano showing a state in which the keyboard lid is closed.
FIG. 8 is a bottom view of an electronic piano.
FIG. 9 is a left side view of an electronic piano; and,
FIG. 10 is a right side view of an electronic piano.
The ornamental design which is claimed is shown in solid lines in the drawings. The broken lines in the drawings are for illustrative purposes only and form no part of the claimed design.