As a postscript; regarding z3ta+ programmimg complexity:
The best primer for me was - believe it or not - PSYN / PSYN II. Still an RGC creation (for Project5), with hardwired routings and many of the complexities of z3ta+ stripped out. Yet it was enough like z3ta+ 'lite' in design to demonstrate the basic ideas and concepts. Almost as if z3ta+ was reborn as a 'normal' subtractive synth.
z3ta+ and version 2's features like waveshaping, oscillator inter-modulations, and LFOs almost warrant a .pdf manual for each. You can gather most of the modulation matrix concepts from Rapture or Dimension Pro. The same goes for the on-board effects. But z3ta+2 still has many more possibilities for complex patching. z3ta+ was (and maybe still is) way ahead of its time.
BTW: I'd probably use a sync'ed sawtooth LFO through a Pitch curve to a single oscillator for the Cars' 'Magic' opening (same chords as the verse). But there's that other layered oscillator sweep (hand-tweaked satellite beeps), plus the churning, panned square LFO. I suppose it'd be possible to create a single patch to do all three, but not with a single oscillator.