ABSTRACT This article explores the role of symbolic score data in the authors' mobile music-making applications, as well as the social sharing and community-based content creation workflows currently in use on their on-line musical network. Web-based notation systems are discussed alongside in-app visual scoring methodologies for the display of pitch, timing and duration data for instrumental and vocal performance. User-generated content and community-driven ecosystems are considered alongside the role of cloud-based services for audio rendering and streaming of performance data.