If you need a piano sound that has a bit more atmosphere, maybe Beatmaker's new (and free) Atmos could do the job.
An ambient piano ROMpler, this blends 86 grand piano samples with an additional FX sound layer, and also features reverb, distortion and delay processing. You can adjust the gain, pan, LFO rate, LFO depth, reverb and pitchbend settings.
Atmos is available for PC and Mac in VST/AU formats. Get your free download on the Beatmaker website.