The reason the midi piano Supertracks sound better than some of the piano RT's is the sustain pedal especially on slower songs. A pianist spends years learning proper use of the pedal, it's not just all the way down or all the way up. They "ride" the pedal a lot, using a lot of partial or half pedaling techniques. The pedal is specifically used to smooth out transitions between chord changes and phrases. With an audio RT, the player has no idea what chords you're going to use so when a RT goes from a Cmaj7 to a Em unless that change was prerecorded you're going to hear the Cmaj7 chopped off as soon as the Em is played. Afaik there is no post processing envelope or something that can emulate partial sustain in an audio file. That makes for a very unnatural sounding RT piano part on slow stuff. Faster tempo's it's not so noticeable.

Midi can use as much pedaling as you want because it's not audio, it's midi. There's lots of midi pianos now that use partial pedaling and those CC sustains are written into the midi part as the pianist is playing it. Makes all the difference in the world as long as you're using a good quality synth. And since it's midi, you can take a Supertrack and have it play as a string section, flutes, another keyboard, whatever.

Bob

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