Clarke and Stevens wrote a lot of Incredible machine music as spoofs, as in musical parodies. This became more evident in TIM3, where the TIM2 MIDI soundtrack was digitalised (bar 3 pieces).
I have both the MIDI and the special digital version of 'Progressive'- the digital track is WAY better. Will upload if you want.
I thought you were talking about TIM2 when you started, but when you say 'mixing', I can't tell if you mean the TIM2 or 3 version.

Kudos for liking TIM music though!

Awesome stuff. Lot of memories amongst those musical tracks for us and many others I'msure.
Regards,
- Alistair