Electroacoustic music has a longstanding relationship with gesture and space. This paper marks the start of a project investigating acousmatic spatial imagery, real gestural behaviour and ultimately the formation of tangible acousmatic images. These concepts are explored experimentally using motion tracking in a source-sound recording context, interactive parameter-mapping sonification in three-dimensional high-order ambisonics, composition and performance. The spatio-musical role of physical actions in relation to instrument excitation is used as a point of departure for embodying physical spatial gestures in the creative process. The work draws on how imagery for music is closely linked with imagery for music-related actions.