My iPod shuffled me on to the Campaign for Real Rock on the way to work this morning and I remembered what a great, harsh, vitriolic song it was; but who do we think Edwyn is thinking about in this number? He name checks the great Bob Dylan, but surely not him? Could it be someone like the lead singer of the dreadful Levellers? or is it an amalgamation of some of those early 90s, doggy-on-a-strin…