This article briefly chronicles the history of the Nordic Network of Music Informatics, Performance and Aesthetics (NNIMIPA) and its roots in previous research networks and milieus. It explains how a cross-disciplinary network works and gives rise to research projects that bridge the gap between the disciplines involved. As examples, three thematically linked projects within NNIMIPA are presented. These projects all have performance interaction (between musicians and between musician and audience) as their nexus.