Tip: Add a reverb AU/VST to the Sampler 1 mixer channel. It really adds a nice realism to the Eigenharp's built-in piano. Don't use too much - just enough to produce a nice room ambience.
I use the reverb that came with my Focusrite audio interface, but there are several freebies/low-cost units available.
Below is a list that could get you started:
List of free reverb AU/VSTs