Nicholas Gebhardt (Lancaster University) opened his presentation by explaining that in it, he intends to provide a few thoughts on jazz improvisation and what it offers us in terms of thinking about the nature of artistic events. Gebhardt argued that perhaps more than any other aspect of music today, improvisation has particular significance for how we explain or account for changes in musical experience, across all the forms of contemporary music: not just jazz, but also within classical, electronic, experimental, modernist, pop, rock, and non-western music as well. He claimed that the reason for this is that as a way of thinking about musical forms, improvisation poses fundamental questions about the process of deciding what to play — that is, what counts for us as music in any given social situation — and how to organise or shape musical events.