Book excerpt: Following the author's acclaimed biographical dictionaries on Schubert and Mozart, 'Beethoven and His World' offers an extremely comprehensive and up-to-date survey of the composer's relations with a multitude of persons with whom he associated on a personal or professional basis: relatives,friends, acquaintances, librettists, poets, publishers, artists, patrons, and musicians. With more than 450 entries, the dictionary is the result of a wide-ranging examination of primary and secondary sources, and critically assesses the use which scholars have made of the considerabledocumentation now available. In particular, there are numerous references to Beethoven's correspondence and conversation books, which have recently been published in excellent new editions. The book places the composer and his music in a fuller context and a wider perspective than might bepossible in a traditional biography; it will appeal to all music lovers, both the scholar and the non-specilaist alike.