This is a big book, a monumental text with 800 illustrations, 400 of them in colour, to be contemplated more easily on a lectern than in bed, celebrating the 75-year history of the greatest record company devoted solely to the variegated music called jazz.

Blue Note Records, with headquarters in Manhattan, originated in the romantic imagination of a privileged adolescent, a Jewish architect’s son (the Jewishness was significant), who was born and brought up in Christopher Isherwood’s neighbourhood in Berlin, which regarded itself, with justification, as Europe’s capital of jazz in the hedonistic heyday of the Weimar republic.