“[His] criticism appeared regularly in publications like DownBeat and JazzTimes. He wrote two books about bebop, the challenging form of modern jazz that emerged in the 1940s. And, along with Leonard Feather and Nat Hentoff, he was among the most prodigious writers of liner notes, annotating more than 700 albums. In 2017 he was named a Jazz Master by the National Endowment for the Arts.” – The New York Times