The high-pitched, sharp whistling of a boiling kettle and the tension at the verge of bursting — the piece under pressure deliberately evokes a sensation of auditory pressure through the concentration and repetition of high frequencies. These sonic characteristics resemble those of the oboe, a woodwind instrument. Especially in the higher registers, the oboe exhibits a sharp and penetrating sound quality — particularly its trumpet-like sounds and the sounds produced exclusively by the reed, which are transformed into more complex and increasingly dense textures. Another aspect lies in the observation of nature. The diverse and mysteriously mechanical-sounding calls of the lyrebird are also musically realized. [...]