Pulpwiki says that "Jarvis played a one-off concert at Sheffield Polytechnic at the end of 1986, accompanied by Captain Sleep playing his Grannys Yamaha Portasound keyboard. The repertoire consisted of daft disco songs Jarvis had written; it is possible that these included early versions of Separations songs."
A spectator recalls that: "I saw one of Russell's plays at Sheffield Poly in 1986 with Jarvis acting in it. I was with a bunch of English Literature students and they were booing them as it was so bad. Also on the same night Jarvis did this thing with a guy known as "Captain Sleep", a short set that was a precursor to the more disco feel that came in after "Freaks". The play was performed in the audience part of the venue as opposed to being on stage and it was before the live set [by Jarvis and Captain Sleep]. Russell and Jarvis were in it, can't remember anything else other than it being booed. So it must have been one of Russells!"