Here is a video of two of my Buchlas with some Elektron gear.
I totally love the Analog Four.
It's ability to sequence virtually every drum machine & synth I own is incredible.
Serge, Buchla, Roland.... nothing stands in its way.
Modules used are:
(System 100): 180,158,144,123
(200) : 257,281,258,259,207
The 251e is the main sequencer in this piece.