Reader comments have converted what began a couple of weeks ago as a <em>Rifftides</em> post about Claude Thornhill’s version of â€Robbins’ Nest†into a seminar on keys, pitch, “Cornet Chop Suey,†Fletcher Henderson, “Stardust†and Glenn Miller, among other matters. It makes for a long, interesting read. If you’d like to catch up, go here and scroll down.