phaidra.bruckneruni.at o:3886 DOI 10.1080/17459737.2022.2044927 The line of fifths and the co-evolution of tonal pitch-classes In this study, we determine the fundamental role of the line of fifths for the organization of tonal material by applying dimensionality reduction to a large historical corpus of pitch-class counts (ca. 1360–1940). We observe a historically growing trend in the exploitation of the fifths range, i.e. the size of segments that pitch-class distributions cover on the line of fifths. Moreover, we introduce the novel concept of pitch-class (co-)evolution, which traces the changing co-occurrence of pitch classes over time and likewise reaffirms the centrality of this linear tonal space from a historical angle, allowing us also to distinguish between historical periods in terms of the usage of pitch classes. eng line of fifths tonal-pitch classes dimensionality reduction pitch-class co-evolution 2025-04-17T09:31:25.817Z LOMv1.0 Author BEGIN:VCARD VERSION:3.0 N:Moss;Fabian C.; FN:Fabian C. Moss X-ORCID:https://orcid.org/0000-0001-9377-2066 END:VCARD BEGIN:VCARD VERSION:3.0 N:Neuwirth;Markus; FN:Markus Neuwirth X-ORCID:https://orcid.org/0000-0003-1990-052X END:VCARD BEGIN:VCARD VERSION:3.0 N:Rohrmeier;Martin; FN:Martin Rohrmeier END:VCARD https://w3id.org/kim/hcrt/scheme https://w3id.org/kim/hcrt/text Textdokument Text LOMv1.0 yes https://creativecommons.org/licenses/by-nc-nd/4.0 application/pdf 4836746 https://phaidra.bruckneruni.at/o:3886 https://phaidra.bruckneruni.at/api/object/o:3886/thumbnail LOMv1.0 discipline