Systematic musicology is an umbrella term, used mainly in Central Europe, for several subdisciplines and paradigms of musicology. The most important subdisciplines today are music psychology, sociomusicology (music sociology), philosophy of music (music philosophy), music acoustics (physics of music), cognitive neuroscience of music, and the computer sciences of music (including sound and music computing, music information retrieval, and computing in musicology. These subdisciplines and paradigms tend to address questions about music in general, rather than specific manifestations of music.
In the European tripartite model of musicology, musicology is regarded as a combination of three broad subdisciplines: ethnomusicology, music history (or historical musicology), and systematic musicology. Ethnomusicology and historical musicology are primarily concerned with specific manifestations of music such as performances, works, traditions, genres, and the people who produce and engage with them (musicians, composers, social groups). Systematic musicology is different in that it tends not to put these specific manifestations in the foreground, although it of course refers to them. Instead, more general questions are asked about music. These questions tend to be answered either by analysing empirical data (based on observation) or by developing theory - or better, by a combination of both. The 19th-century positivist dream of discovering "laws" of music (by analogy to "laws" in other disciplines such as physics; cf. Adler, 1885), and of defining the discipline of systematic musicology in terms of such laws, slowly evaporated. Ideological trends stemming from modernism and later post-structuralism fundamentally altered the nature of the project.