This text presents a research progress about the relationship between artistic practice and technological development in the field of sound and computer music made with code. In this context, the materials of sound artists and computer musicians are the textual code and the sound generated or controlled by the code. The discussion is related to an apparent dissociation between artistic practice and technological development. To understand this relationship I start from the computer science’s concept of high and low programming levels. Based on this, I observe that artistic practice is usually centred in the high level while technological development points out to both levels. To study this relationship I designed a graph in which artistic practice and technological development have the categories of layers and are connected to the high and low levels by the source code. The access to lower levels makes it possible to understand the control structures that define modes of artistic production of the software, which implies somehow different discourses and questions. This is possible when the source code of software is open, but in order to understand the technological structures in lower levels, from an artistic perspective, a specialized knowledge is required.