It was a high-spirited, generous show. Dave Holland took only one extended solo, which was masterful, a star turn but not an occasion for showing off technique. He was there as the leader of a group, giving each member opportunities to shine. Each piece was an extended essay; it was challenging music, mostly uptempo, usually involving several voices at once, pushing the envelope. I was especially interested in Chris Potter, having heard him in different contexts in recordings, never in person. Steve Nelson on vibes and the drummer, Nate Smith, were outstanding -- individual voices and contributors to the group's intensity. Alex Sipiagin on trumpet was consistently interesting, but sometimes I wished for fewer notes and more clearly defined lines.