[...] YES I know Live was originally built in Max [...]
It was not, according to Robert Henke
Is it true that Live was originally written in Max MSP?
There was a step sequencer, which had been developed by Gerhard Behles and myself, and this step sequencer had a few features, which later found its way into Live. For instance, the fact that you can switch patterns for each track individually. And a lot of the effects in Ableton Live I prototyped in Max, like the Grain Delay, which is a classic type of Max patch. The Chorus was a Max patch as is was the Waveshaper/Saturator. The Operator synthesizer started as a Max patch, at least in parts. Live itself was written from scratch in C++. But I like the idea that it’s a Max patch, because everyone who is into Max obviously understands that this is impossible. [Laughs] It’s a nice urban myth.
And +1 for customizable key commands.