 He worked in a method which saw Khan record vocal improvisations onto multitrack tapes which Brook would subsequently add to and layer, part by part, in the style of remixing; unlike the typical method of remixers building their mixes out of recorded parts that had already been carefully selected and edited by the original artist, for "Night Song", Brook had to decide which sections out of Khan's improvisations, some of which were an hour long, were the best and how they were going to fit together, without having a structural point of reference to start with or aim towards.