  Wolsterstorff complains that Wollheim’s thesis about the sharing of properties among types and their tokens gives us “no illumination” with respect to the pattern of such sharing (1975, 239). Artistic types and their tokens cannot have all and only the same properties. For this reason Wolterstorff turns to a kind of “analogous predication” in which properties attributed to the token are analogously attributed to the type. Suppose a performance or instance of a work has the prescribed or indicated property, P. The analogous property of the work (qua type or kind) is the property: being such that something cannot be a correct or proper example of the work without having the property of being P. Shifting to the terminology of ‘kinds’ and ‘examples’, Wolterstorff focuses on properties that are necessary to “properly formed” examples of a kind, where the kind in question is a “norm-kind” that can (but need not) have both improperly and properly formed instances. For example, some seriously flawed attempts to play a difficult piece by Chopin are nonetheless performances of that work, even though they lack qualities that a proper or a good instance of the work would have. This proposal is meant to accommodate the many cases where significantly different artistic and aesthetic properties figure within the occurrences or performances of one and the same work (on this theme, see also Walton 1977).