Jesus Christ those synths are awful! I really wonder how Guy managed to keep the job after delivering such cheesy crap... (kettledrum Boom boom)
LE
Actually it was Alan Clark. MK and AC went to Air Studios to record two pieces of music that will be split on three for the documentary.
Probably the budget was quite low so, guitar and synths...
With Kettledrum boom boom I guess you mean the timpani sound, a percussion... it was made with synths, not only here but also in Cal, as Superval says, and in other scores like Princess bride and Last exit to Brooklyn.
It was synclavier and linn drum machine era...