This almost-instrumental vignette is the latter half of an older song the band had. Frontman Jonathan Higgs explained to The Line Of Best Fit
: "It wasn't quite up to scratch for the record and it made the whole thing a bit too long."
Bassist Jeremy Pritchard added: "When we first drew up the album tracklist '_ARC_' was not on it but sonically it is a kind of a plateau in the middle of the record. It actually makes the album a slightly easier listen."