"The London Olympics people wanted to use it," he spluttered. "They hadn't even read it. They thought it was about timing and clocks. It's all about grief!"
Auden, he said, was famous for his belief in ritual, like the martini served each day at exactly 6pm, and woe betide anyone if it arrived any later.
"One does need structure in one's life," he said. "Especially after the third martini," added Ricketts.
The poet was also renowned for his kindness, always answering letters from fans. One such correspondent, said McCall Smith, was a "Canadian burglar", a description which made him crack up - "Canada is so civilised, it's like saying I've got a cockroach".
There was a strange moment, or moments, in the Q&A section at the end. One woman, who identified herself as one of the more well-known rock musicians in New Zealand, was not content with an answer to her prolonged question.
She stood her ground at the mike, despite someone waiting behind her, and tried to engage in a conversation, to the point when AMS started to look a little uncomfortable.
McCall Smith has thousand of avid fans, but this was perhaps a step too far.