It appears to me, and I could be wrong, that the exemplar is someone playing over, or along with a MIDI or MP3 file.

Oh, and Joe Ayala gets my vote for the best overall player.

Gary cool
_________________________
PSR-S950, TC Helicon Harmony-M, Digitech VR, Samson Q7, Sennheiser E855, Custom Console, and lots of other silly stuff!

K+E=W (Knowledge Plus Experience = Wisdom.)