In the video, the duo performs Leg-O, live in the studio.
Here are the technical details:
It was recorded and shot live in a studio using an Octatrack, a Therevox ET-4 processed by an MXR Carbon Copy and acoustic drums.
The loops were sequenced and recorded on the Octatrack in advance using a Moog Slim Phatty, Oberheim SEM Pro, Vermona DRM1 MKIII and various effects pedals. The Octatrack is manipulating these loops live using Parameter Locks, Scenes and the internal effects.