With SF2 standard, you can play samples from pre-recorded banks, named "SF2 soundfont".

Many SF2 soundfonts are available on Internet.

SF2 can be modified "on line" with the sample.

By default, Expresseur embends a high-quality piano soundfont, named "Realistic Piano" (www.realisticpiano.com).
To select it, clear the field "SF2 file" in the tab Hardware, section SF2. This soundfont is enhanced by additional harmonics when the right pedal is activated. This feature gives a realistic imitation of a real piano when right pedal is used.
The volume of this effect can be adjusted in the Hardware tab, SF2 section. It is recommended to use a continuous right pedal to have a good feeling.
Controler 71 can control this harmonic, without triggering damper.

Controler 66 triggers partial damper : when controler 66 is switched on, damper is trigerred for current chord, but not for the next notes.

Standards Midi controllers supported :