Christophe brought his semi-acoustic guitar, but the battery was flat. So he used the Moog, the one Olivier had borrowed from a friend. Olivier wasn't there at the time, but Antonin thought that what they had done lacked drums and borborygma, so he asked him to record some overdubs. He also asked Philippe to play some cello. That is how this track came to be.

https://antonindebemels.bandcamp.com/album/doctobre