There was a guy floating around Gear Slutz about 10 years ago with a similar idea. IIRC he was a French expat living some where in Africa and, with a dependency on the internet as a means of communication, it seemed like his efforts ended up being received with confusion and or dismissal.
He was producing synthesized Impulse Responses that were constructed around tone centers and the harmonic intervals of particular song keys.
I thought it was fascinating, but I also thought the overall effect reminded me of when you lay a sweetly voiced pad into the mix just below the threshold of perception.
He offered IR packs for all the song keys and popular scales. They were expensive but I think he sort of knew he was onto something very, very cool.
I made a few custom IRs for myself based on the principles he offered as explanation.
I think it is very cool that a company like PSP has approached reverb with a similar goal.
Thanks for sharing the idea.
best regards,
mike
Jeff Evans
PSP make a great free VST which is a special piano reverb designed for piano. Here:
http://www.pspaudioware.com/plugins/reverbs/psp_pianoverb/
What is cute about this is that the reverb that comes out the other end can only be on the chromatic notes of the music scale ie the reverb notes can only be chromatic. It is rather nice and when used in moderation can sound rather good. Experiment. It can also be used on anything too of course. Any sounds that are in between chromatic notes won't produce any reverb, only musical notes will.
Otherwise what others have said here will work too. A quality convolution reverb used in small doses.
One trick that has been used by some engineers and will create a similar sound is to setup a speaker right underneath a grand piano. The sustain pedal is somehow organised to be down permanently. Any track can be sent via an aux send into the speaker under the piano. Above, the strings will create reverb but only on the chromatic notes, similar to this VST. A figure 8 mic pattern could be used above (with two mics too for nice stereo effect!) and setup in such a way as they would null the speaker sound and only hear the reverb from the piano too. This is actually quite desirable and very musical reverb as you could imagine.