My research is concerned with finding a common notation for pitch-based, sound-based and spatialized music in an attempt to bridge the gap between acoustic and electronic music, also working towards the possibility of a holistic system for algorithmic composition based on music representation. This paper describes the first step towards this goal, focusing on the combination of pitch-based and sound-based musical structures, introducing a graphical notation system that combines traditional music notation with electroacoustic music analysis notation. I present how this was tested in practice in a case study within the framework of composition education at the Royal College of Music in Stockholm, where composition students were working with, and reacting to, the system.