The book has no precedents in domestic musicological literature . This , On the other hand, , Music of the 20th Century , built on the alphabetic principle common to encyclopedias and including articles by composers and about performers , On the most prominent musicologists and musical figures , Musical Works , created between 1901 and 2000, about genres, Forms and styles of music of the 20th century , on Music Organizations and Institutions . On the other hand, the author is not limited to dry presentation of information and, not sacrificing academic thoroughness, seeks to make the presentation attractive and understandable to the general reader. Some articles are prefaced with musical examples; a number of articles are accompanied by lists of literature, and most articles about composers are also lists of their works. The main text is supplemented by a chronological table. For Musicians and Music Lovers .