The Fourier transform of the TESS merged Cycle 2 and 4 light curve of the β Cep star HD 192575 (top). The three lower panels are zoomed-in versions of the coloured and labelled frequency ranges, whose averaged splittings are indicated in the upper panel. They consist of a merged quintuplet and quadruplet undergoing an avoided crossing (left), an isolated (possibly incomplete) quintuplet (middle), and a triplet whose prograde mode has the highest amplitude in the entire oscillation spectrum (right). The identifications for the azimuthal order m of these multiplet components are indicated above each peak. The figure was made by Siemen Burssens.