A tonal type is minimally identifiable by its three markers and thus objectively observable completely apart from its musical or cultural context; it… - Harold Powers

'Objective' analysis is a tool, primarily useful for suggesting or confirming putative relationships between different musical styles....'Critical' analysis results not in a statistical measurement of style or proof of relationship but rather, ideally, in a formal model for a relatively independent and artistically controllable style within a culture, and should then be viable for accounting for individual manifestations of that style...

Given my present belief in the much greater range of variability as to both order and kind of complexity in the world's musics versus the world's languages, I can hardly imagine how a model developed really satisfactorily for the detailed structureal explanation of one musical language is so easiy modified to another, and all the more so if the original model be evolved from linguistics rather than from the musical disciplines.

Counterpoint texts tend to resemble one another in the underlying principles of voice-leading they espouse and in the kinds of orderings of rules they provide, but no one could accuse the harmony texts of, let us say, Heinrich Schenker and Hugo Riemann, or of Allen Irvine McHose and Walter Piston--or for that matter, of Arnold Schoenberg, Paul Hindemith, and Roger Sessions--of being mutually compatible, either in premise or in practice.