Various methods that have been developed in order to notate electroacoustic music, are applied in the four studies. Study I comprises the organisation of non-instrumental sound recordings. Non-instrumental sounds are here regarded as all sonic events not created by means of an instrument, including acoustic, electric and synthetic instruments. This category is further subdivided into reproducible and extractable sounds. Reproducible sounds can be repeatedly created by a person and hence, for instance, become part of a performance. Whereas, extractable sounds cannot be removed from their environment, but need to be recorded in order to be used as the sonic material of a musical work. Both reproducible and extractable sounds are utilised in Study I. They are supposed to be recorded, organised and their dynamic level, in some cases, be subsequently altered. The sounds introduced in Study I are in Study II subjected to simple transformations. Arrows determine in such cases which audio track is transformed by which process. The utilised techniques are time and so-called pitch changing, fragmentation and recombination as well as the retrograde technique. Further, filters and reverb effects are employed. In Study III, the method of fragmentation and recombination is used to design an instrument based on granular synthesis. The instrument is in Study III at first constructed and then depicted in time by means of common pitch-based notation. Additionally, a phase vocoder is employed in order to merge recorded sonic material with synthetic material. The synthetic sounds of the phase vocoder are produced by simple frequency modulation. In Study IV, mainly synthetic sound producers are employed: frequency modulation, which was introduced in Study III, is extended in two ways. On the one hand, a frequency-modulated signal is amplitude-modulated and on the other hand, a single oscillator is frequency-modulated by two serial oscillators. Further, square and triangle wave oscillators are ring modulated and noise generators subjected to waveshaping synthesis.