If it does then it is not very good at it. I have made several attempts to understand it over the years, but it seems to me to make a lot of very arbitrary assertions, nearly always concerning harmony and chords for some odd reason, which have absolutely no connection with the sort of sounds I enjoy. Cause and effect, if they exist at all in art, are personal options and not universal. It would certainly be possible to create theories which have as their object the replication of known styles. In our age, this would be best accomplished by computer algorithms such as those of David Cope. But even those would surely be heuristic and particular and not universal or general.It would also be possible to create theories applicable only to one's own music, but even then, anything more definite than vague guidelines would flush the creative baby out with the intellectual bathwater. Music is constantly evolving, both externally and personally, and therefore cause and effect, if present, must evolve too.
To me, strictly personally ? I do store a number of guidelines for creating my own music, the music I like to hear. For instance, for several years now, I have found the notion of cellular transition (my own term) to be astonishingly productive in the matter of dynamic improvisational form. In other words, using this internal guideline tends to produce sounds of the kind I like to hear. If it ceases to do so I shall not use it.An important point is that my personal theory (call it that for the sake of argument) is constructive and dynamic, not descriptive and static. That is to say, its principal effect lies in producing music, not in describing music which already exists. I think this distinction is very important. We may construct all manner of descriptive theory about the appearance of a flower, but such detail, however complete and accomplished, does not lead us to understand how a flower evolves from its biological instruction.To take a more direct example from the forum, Derek recently posted videos about mental methods he employs to improvise the sound known as "baroque". These are essentially personal constructive theories, dynamic guidelines. Their results sound good to him, and probably to others, therefore he nurtures them. They are dynamically useful to him. They have little in common with the huge body of static descriptive theory which no doubt exists for baroque music.It isn't that one is "better" than other, I'm not iconoclastic about centuries of scholarship, but it does depend on what you want to do. As a boy, I bought Tovey's analysis of Beethoven and actually read most of it. It is an admirable work of tremendous scholarship, but it is a strictly descriptive and static theory. If I actually wanted to imitate Beethoven (I don't !) I would immerse myself in his sounds and form constructive, flexible, dynamic guidelines of the sort Derek is using for his baroque.Those are two meanings of "theory" for me.
As a boy, I bought Tovey's analysis of Beethoven and actually read most of it. It is an admirable work of tremendous scholarship, but it is a strictly descriptive and static theory. If I actually wanted to imitate Beethoven (I don't !) I would immerse myself in his sounds and form constructive, flexible, dynamic guidelines of the sort Derek is using for his baroque.
I'm surprised you find Tovey's work to be "strictly descriptive and static". Next to Schenker, he's probably the most "musical" theorist of the late-19th/early-20th century. Take, for example, the opening of the book you cited: "The first condition for a correct analysis of any piece of music is that the composition must be regarded as a process in time. There is no such thing as a simultaneous musical coup d'oeil; not even though Mozart is believed to have said he imagined his music in that way."After two sentences, he's already way ahead of most. And he incorporates this philosophy into his observations and digressions, which, in my opinion, are far from being strictly descriptive and static.