Stuart Nicholson wrote in the BBC Music magazine of the "Rarum" series: "... selected by the artists themselves, this series is of enormous importance in revealing the breadth of each artist"s work, as much for the converted as the unconverted looking for a window into the remarkable ECM catalogue". Arild Andersen"s compilation takes a zigzag path through his discography highlighting his own groups, his soloistic brilliance as a bassist and his perceptiveness in recognizing talent in bud. Quite a few musicians received early exposure through Andersen"s efforts. Amongst them: Bill Frisell, Nils Petter Molv‘r, Jon Balke, Bendik Hofseth, Bugge Wesseltoft and, more recently, Vassilis Tsabropoulos. Andersen"s :rarum also includes encounters with established masters Paul Motian, Kenny Wheeler, and Ralph Towner. "It"s been some fantastic years with ECM, and I feel I"ve just started".