I'm not sure when it was written, but it was said that this letter was the reason Bruce decided to do Glastonbury last year (Mark Hagen was the guy running the festival). It's sad that Joe wasn't around anymore to see him and the band play. But Bruce returned the favor by covering Coma Girl at Glasto, and the next day London Calling at Hyde Park. BTW, every word Joe said in this letter was true. It still is.