I transpose on the the fly all the time in mainstage... I'm a poor piano player so I learn songs in one key and if it's not in the original key then I transpose to make it work lol. You need to have MS3. There is a mifi FX plugin cause transpose then you just pick how many semi tones you want to change it. So C to Bb would be 2 semitones..... make sure you put the transpose on EVERY sound you are using.
Cool..that will help. It's called "Midi FX"
So I can have certain patches transposing? Then I can use Ableton to change patches... WOO HOO
Is adding this plug in to a channel strip as simple as selecting it from a pull down menu in the strip itself ?
Have you used the arp or note repeat options? it's in the same drop downlist. It's ust under what instrument your using.... like ES2, etc... just before you get down to the point where your adding things like reverb and delays.