For VGO stuff I'm generally recording and mixing engineer. That means I'm the guy who puts everything together at the end of the production process (and I get the grueling job of matching composer/orchestrator/client/audio director's expectations with usually many iterations of feedback. Basically nothing leaves my desk until everyone's happy)
I gave up playing instruments a long time ago - found that my time and talents were better invested elsewhere.
(note: not
saying we were or were not involved in the music for the demo or anything other than the two trailers where VGO has openly said we're involved in.)