The track is the work of elusive production team letthemusicplay
Blood Orange, Pond and Jagwar Ma also added to line-up
Band aiming to release their fourth album in April
'Extensions' and 'I'm Going To See The Stars (Or What's Left Of The Stars..)' were posted on SoundCloud
Guitarist also says new LP sounds as if it's got 'bigger arms' than previous work
Mystery Jets forced to leave the stage halfway through their performance at the Derbyshire event
Band wil now release fourth album next year, having originally planned for September release
'Skying' band headline final day of the Oxfordshire bash
Allbrook/Avery recorded an LP with the London-based band