Last year at Waterloo’s Network Theatre free-jazz and improv percussionist Eddie Prevost began the series of encounters that gives this set its name – Jason Yarde and John Butcher are among the guests on upcoming volumes. But this May 2011 recording with Evan Parker and the latter’s regular bass partner John Edwards marks a spectacular start. Parker plays tenor sax throughout, on just two long tracks – the first varied in sonic landscape and pacing, the second more focused on high-energy jamming.