If your intention is to record original Midi Tracks to Audio, then in order to get any Midi track to sound authentic, it is necessary to edit the Midi track by adding a mixture of Midi Controllers such as CC11 (Expression), CC1 (Modulation) and Pitch Bends. These can be added Manually via the Event List or the Piano Roll Window. However, in my experience, it is difficult to emulate the articulations achieved by real life musicians manually unless one has a good knowledge of the instrument concerned. I use a simple program by Ntonyx called the Stylizer which can be used to emulate the way instruments could be played. If you are interested, I will be happy to demonstrate the way this program works. Please PM me.

Lyn