Further to my post a few weeks back about phrase-end swipes, I was recently looking at some arrangements to offer advice on, and noticed that the categories of swipe behaviour I discussed there could offer a useful framework for making decisions about voicing. In particular, the shape and internal energy of the embellishment can usefully inform which voice(s) move, and in what directions at the ends of phrases.
My last post in this subject was specifically about swipes, but I think the categories work for the harmonic content for echoes as well. Indeed, the question of who is doing what, to what effect is more immediately audible in an echo, since the use of extra word sounds draws attention to the embellishing activity.
But (and here is a nice new little guideline that I have only really articulated to myself as I type here), the expressive shape of a phrase-end embellishment should make sense in a purely harmonic sense as a swipe, whether or not we decide to add extra texture or rhythmicising effects through added word sounds. (You know, in much the same way that the delivery of a melody should make sense even to someone who doesn’t speak the language it’s sung in.)