Duffy in The Sun February 29, 2008: "Bernard (Butler) and I would never sit around and talk much in the studio. We'd go in, say hi, and sit down straight away at the piano. We did Serious one afternoon and I immediately loved it. It made me feel really good. It was just about having fun." Duffy then added that it was "serious fun."
New Order took the title for "Blue Monday" from an illustration, which read "Goodbye Blue Monday," in the Kurt Vonnegut book Breakfast Of Champions. The image referred to the invention of the washing machine improving housewives' lives.