Table 7.1. All possible permutations of isochronous and non-isochronous metrical layers
(Note that this list is not meant to essentialize particular musical forms as characteristic or definitive of some metric systems, but merely to note some regional or stylistic clusters of rather well-known musical forms, that—as far as we can see—can, and in some historically, regionally, and stylistically specific realizations typically do, feature certain aspects of metric structure)