No, not agreed. Expression can be different from simple volume. On a Hammond organ for example it's specifically called an expression pedal because it increases volume non linearly. This is by specific design. It's weighted towards the higher levels. If you're playing at quieter levels and increase your pedal by say 10% you get a certain level of increased volume but if you're already pretty loud that same 10% of pedal movement at the higher end of the range is more than a 10% change in volume.

In addition to that, an expression pedal also increases the overdrive of of the tube preamp and the Leslie amp so it also changes the character of the sound. That's where the growl comes from on many recordings of organs. A good software Hammond includes using expression to control the amp sims of different models of Leslies. I'm sure organs are not the only example of the difference between expression and simple volume changes. A software instrument that includes that will be looking for CC11 expression in a midi file, not CC7.

Piano is one exception because it's all velocity, piano doesn't use pitch bend, modulation or volume controls but like Mario said you need a synth with enough velocity layers on the piano patch to matter. A basic freebie or cheap GM synth usually has none or maybe two at the most but you load up Ivory or Pianoteq that has unlimited velocity because it's modeled not sampled, and that will bring the MST's to life. Of course, those cost real money like $300-$500 just for one instrument.

This goes to Mario's point about using a basic GM synth vs the higher end expensive ones. Biab is GM based and the GM spec does not include a lot of the nuanced midi controls. This is why over the years I've said don't get too excited about loading up Biab midi charts in a DAW and expecting them to sound close to the original Real Track or Drums. Especially the drums. Biab is not capable of embedding the proper midi controls to give that human feel we all love and is the reason the Real Tracks/Drums were invented in the first place.

Bob

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