Knowledge Bank

An analysis of 9,788 instrumental themes shows that minor-key themes are, on average, slightly lower in pitch than major-key themes. The lower pitch is not merely an artifact of structural differences in the scales. In addition, instrumental themes in minor keys show a weak though significant tendency to use smaller pitch intervals. Both results are consistent with observations in speech prosody, where sad speakers exhibit a lower F0 and narrower pitch fluctuation compared with normal or happy speakers.