Changing patterns of social network structure in composer-singer relationships: A case study of the Korean popular music industry, 1927–1997

This study focuses on relationships between two different sets of actors in the Korean popular music industry—songwriters and singers—who were mutually connected in the production of hit songs during the period of 1927–1997. Data for the present study were obtained from a set of publications providing the following information about hit songs in Korea since 1925: title, musical style, year of recording and release, lyricist(s), composer(s), singer(s), and the label company producing the record or album. Data are used to test a series of hypotheses on the nature of relationships between songwriters and singers. Results of the present analysis show that composer-singer pairs are likely to have produced only one hit song together, due to a high degree of market competition in the popular music industry. Because composers tend to have more control over their relationships with singers than singers have in their relationships with composers, composers are more likely to have multiple hit songs with more than one singer than are singers to have multiple hit songs with more than one composer. Genres of popular music in Korea have changed significantly since 1950, and these changes have also affected composer-singer relations. The diversification of genres has reduced the concentration of hit songs by selected elite composer-singer pairs over time. Another important consequence of the changes in genres is that the proportion of hit songs by artists playing dual roles as composer and singer has dramatically increased in recent years.