Introduction #

Here’s my definition of expression map:

An expression map takes in the information that can be gleaned about a note from a musical score—pitch, duration, relative volume, playing techniques, etc.—and produces MIDI signals to play the note more or less as human would play it, but on a VST instrument.

If that statement doesn’t leave any questions in your mind, don’t waste your time here: skip ahead to the next section. Otherwise, continue.