Atolón  : Ruth Barberán, Alfredo Costa Monteiro, Ferran Fages. Chip shop music :  Erik Carlsson, Martin Küchen, David Lacey, Paul Vogel. Recorded by  Simon Reynell, February 2012. Mixed and mastered by Ferran Fages. A  collaboration between two established and highly-regarded improvising  ensembles, Atolon from Barcelona and the Irish-Swedish group Chip Shop  Music. The disc consists of the whole of a wonderful concert performance  from February 2012 in which the two groups attempted to play together  without merging or compromising each group's sound, and a studio piece  that combines recordings by the two groups which were made separately  and then superimposed.