Computing is transforming how we interact with music. New theories and new technologies have emerged that present fresh challenges and novel perspectives for researchers and practitioners in music and human-computer interaction (HCI). In this collection, the interdisciplinary field of music interaction is considered from multiple viewpoints: designers, interaction researchers, performers, composers, audiences, teachers and learners, dancers and gamers. The book comprises both original research in music interaction and reflections from leading researchers and practitioners in the field. It explores a breadth of HCI perspectives and methodologies: from universal approaches to situated research within particular cultural and aesthetic contexts. Likewise, it is musically diverse, from experimental to popular, classical to folk, including tango, laptop orchestras, composition and free improvisation.

The International Gesture Workshop is an interdisciplinary event where researchers working on human gesture-based communication present advanced research currently inprogressandexchangeideasongestureacrossmultidisciplinaryscienti?cdisciplines. This workshop encompasses all fundamental aspects of gestural studies in the ?eld of human-computer interaction and simulation, including all multifaceted issues of m- elling, analysis and synthesis of human gesture, encompassing hand and body gestures andfacial expressions. A focusof these eventsis a sharedinterest in usinggesturein the contextofsign languageanalysis, understandingandsynthesis. Anotherstreamof int- est is the user-centric approach of considering gesture in multimodal human-computer interaction, in the framework of the integration of such interaction into the natural - vironment of users. In addition to welcoming submission of work by established - searchers, it is the tradition of the GW series of workshops to encourage submission of student work at various stages of completion, enabling a broader dissemination of ?nished or on-going novel work and the exchangeof experiences in a multidisciplinary environment. Gesture Workshop 2007 (GW 2007) was the 7th European Gesture Workshop in the GW series initiated in 1996. Since that date, the Gesture Workshops have been held roughly every second year, with fully reviewed proceedings typically published by Springer. GW 2007 was organized by ADETTI at ISCTE-Lisbon University - stitute, during May 23-25, 2007. In GW 2007, from the 53 contributions that were received, 15 high-quality full papers were accepted, along with 16 short papers and 10 posters and demos, showing on-going promising gesture research. Two brilliant keynote speakers honored the event with their presentations.