Interactions happen in time. Most of us will agree, therefore, that interactions benefit from an appropriate temporal structure. And for many activities there exists a more or less stringent set of rules regarding that structure. This article, on the other hand, describes how such a structure for an everyday activity, i.e. a group conversation, may arise not from the application of pre-established rules, but from a collective creative effort. The elements of this co-operative process are individual preferences regarding the principal temporal parameters, the tools are the basic procedures used in musical composition for structuring time.