It is one of the most stirring sights in rock – two drummers (one, ideally, left-handed) pounding away behind a couple of gurning soloists – but, and here is where I defer to the wisdom and knowledge of the Afterword, if you will, massif – is there generally a ‘lead’ drummer and a ‘rhythm’ drummer, or do they usually work out in advance where the fills are going to be? I haven’t watched enough Dead and/or Doobies to take an informed view. I saw The Waterboys a couple of years ago and one of the pair was essentially an over-qualified percussionist, and when Messrs Mattacks and Conway teamed up at Cropredy it was very much an eye-contact split-stereo effort, but these were temporary experiments. Did Butch Trucks habitually pull rank? And do get me started on the latest King Crimson line up.