This work presents a comparative analysis of multiphonics in the different members of the saxophone family. Starting from the intuitive premise that the same fingering on two different saxophones would result in the same multiphonic but transposed, 18 examples were analysed from two different perspectives: 1) multiphonics with the same fingering on different saxophones; 2) multiphonics with the same notes (sounding pitches) but different fingerings on different saxophones. In both cases, the study involved spectral analysis of a set of multiphonics specially selected for their particular characteristics, including a transcription to musical notation of the main spectral components. As a complement, the spectral analysis of similar multiphon...