Here is a piano like yours. Two lamps and the series of prints above give it design pizazz. For your wall, the series of prints could go higher with your TV as the central element (see blue coral prints that would look great surrounding a flat screen. Blue bench seat would pull it together.
Stripes Mural (DM213-1) - Mr Perswall Wallpapers - Add a wow to your wall with this bright multi-coloured horizontally striped mural in bands of different width. Also available in purple and grey. Total mural size 180 x 265cm - NOT AS STATED BELOW.