This study aims to explore and investigate the resonant frequencies and corresponding semitones present in outdoor environments including natural settings such as forests and areas with abandoned structures. Using a framework based on Research through Design as a research methodology, and Interaction Design Research as a means of making, the study creates audible compositions where frequencies are amplified through auralization and repeated convolution based on impulse responses from the selected recording locations. The results reveal that outdoor spaces exhibit complex acoustic characteristics, and that the semitones within these spaces become distinctly identifiable through the applied process.