Tonality

Tonality is a ubiquitous term in musical discourse as indispensable as it is obfuscating. Typically, the term tonality (and more generally, “tonal music”) references the pitch-centric “common-practice” language of the transposable major and minor key system within which most classical music has been composed in the West from at least the mid-17th century through the early 20th century. Many theorists have highlighted certain empirical features of melody or harmony as being particularly characteristic or even essential to the tonal system (e.g., the content and structure of the diatonic scale, hierarchies of scale degrees and chord functions, or the cadence in defining or stabilizing tonal centers). At the same time, many theorists have emphasized the psychological power of tonal music for evoking strong affective responses from listeners by arousing strong expectations of tonal behavior that may be realized, delayed, or even thwarted. Clearly, then, any study of tonality needs to take into account the varying and often conflicting ways the concept is understood and used by given writers. But the concept of tonality has also been useful to musicologists for constructing evolutionary models of musical development while also describing—and contrasting—other musical styles and historical languages of music that do not always follow the norms of Western “common-practice” music. Particularly important in this regard is the chromatic language of many late-19th- and early-20th-century composers that is thought to have extended, deviated from, or even negated normative tonal syntax. Here Wagner’s use of chromaticism and extended modulation is usually cited as the progenitor of this process, one that is seen by many of these same observers to have led in the 20th century to the gradual dissolution of classical tonality in favor of a non-hierarchic kind of pitch organization, termed by neologisms such as “suspended tonality,” “post-tonality,” and perhaps most conventionally, “atonality.” Of course, tonality did not pass away; it continued to thrive as a common musical language through the 20th century, particularly in popular music idioms, even as it evolved into numerous dialects and hybrid forms within our globalized and digitalized musical marketplace. Yet the persistence of this myth of tonal evolution and devolution in Western histories of music suggests how high the stakes are in defining the content and perimeters of tonality. Tonality seems to be simultaneously an object and an ideal that continues to exert unparalleled influence—and not a little anxiety—to this day.