I'm admittedly using a broader, lay definition of "scat", but (e.g.) I consider Sting's sung parts during the final fade of Every Little Thing She Does Is Magic scat
I don't know what the technical term for this is, but I definitely wouldn't call it "scat".
There are also lots of improvised lyrics in the pregón sections of Cuban/salsa music, but I wouldn't call those "scat" either.
If they aren't lyrics and not scat, then what are they? If neither "scat" nor "vocalise" nor "vocal effects", what are they? I see no practical difference between any of these.
The far more important question regarding these concepts is "so what"? I went and quickly read through the related thread under Guidelines and didn't see why any of this is necessary.
One of the benefits, as far as I'm concerned, was to clarify that vocalese and scat are near-opposite, and not interchangeable concepts.
As for the usefulness:
- "vocalese" may be of interest inasmuch as vocal Jazz usually maintains the traditional distinction between composer and performer, and vocalese is the rare case where performers dabble in composition or at least lyric writing. Not "useful" information, as such, but "interesting", the same way that "#3 hit in 1776" is.
- "scat" is of practical use to me and other vocalists. When we read through lists of performances and see somebody known exclusively as a vocalist (say, Ella Fitzgerald) listed for an "instrumental" performance of a song, there is always the question of whether the performance was misclassified, whether actual lyrics existed that were performed, or whether it was a scat performance. It's also a particular technique that requires lots of practice to perform tastefully, so being able to search for such performances is valuable as well.
This reads as mostly irrelevant to me. "Vocalese" seems to simply be an adaption of an existing work, usually an instrumental for which someone has written lyrics and gets a writing credit.
If I see an instrumental credited to a vocalist, I assume it was just technically credited that way or there's some vocal effects, etc. The coding as instrumental is the material thing with a comment/tag encouraged gravy; however, I still see no reason to have separate tags or any tag for vocalese.
I can see where scat, vocalise, or vocal effects can rise to musical elements deserving of a composing credit; however, the performance remains an instrumental. The Great Gig in the Sky comes to mind, which should be coded as an instrumental in my view as the words are spoken non-lyrics and the vocals are just "effects".
I'm reminded how doctors make all kinds of distinctions between different "cuts", as the type effects treatment. How do any of these differences effect SHS treatment?
Vocalese gets adaption treatment, no tag necessary.
Scat/Vocalise/Vocal Effects all get instrumental treatment with a combined S/V/VE tag.
At least that's how I see it. Any value of these tags is very marginal at best, far outweighed by the confusion generated and the likely errors resulting in irritated editors.
This kind of stuff is why if we ever start coding genres, they need to be broad or there will be endless arguments over new vs. alt. country, black vs. death metal, etc. A song either has lyrics or it doesn't. If it has lyrics, they are either material or immaterial.