Logic Pro 9 Logic and Mainstage

The short answer is, yes. The keyboard player in my band does it all the time. Logic to run backing tracks, Mainstage to trigger live from his keyboard. And this is on a white Macbook that's a couple of years old with 2 GB of Ram......

Having said that though, he only plays back a handful of audio tracks from Logic, with all the effects processing rendered to disc. So, no software instruments, no plug-ins, just plain audio tracks. That makes it VERY quick to open (and close) Logic projects between tunes.
 
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