This track is from my recording of a concert called "Unheard Voices 2" in the Assembly Hall at Walthamstow Town Hall, London - a well-known recording venue. Vocal and percussion groups from a number of local schools were arranged around the walls of the hall, and there were a handful of professional instrumentalists in front of the microphone, with the director (playing the keyboard and leading the singing) behind, and the audience - entirely families, of course! - behind him. My brief was to produce a stereo recording for use the next day during an associated art exhibition, so I simply made a UHJ encoding of the surround recording - which they were delighted with; but you get the full surround version.