Inextinguishable. The New Yorker, Feb. 25, 2008.
Some more CD notes: Herbert Blomstedt's cycle with the San Francisco Symphony offers a very solid (and cheap) introduction to Nielsen. There are also strong recent cycles by Michael Schønwandt (da capo) and Osmo Vänskä (BIS). Leonard Bernstein's classic recordings of the Third, the Fifth, the Flute Concerto, and the Clarinet Concerto are available through ArkivMusic as part of a four-CD box. Amazon's download site has Thomas Jensen's stunning live performance of the Fourth and also songs sung by the heart-stirring Aksel Schiøtz.