Performers of early music are usually confronted with two types of musical editions: those in which the music has been edited using modern (and often anachronistic) standards, and urtext editions, which present the music as found in its original source, without any editorial additions. We salute with enthusiasm the appearance of a third type of edition, of which the volume under review is an exemplary sample. Spain, 1550-1830 is the first number in a new series, Historical Organ Techniques and Repertoire, combining a historically informed reading of the music with a thorough and scholarly account of performance practice from the period and location in which the music was composed. Background historical studies of such quality are rare in performance editions with a pedagogical orientation such as this one, and the author, Calvert Johnson, and publisher, Wayne Leupold, of this work must be congratulated for their achievement. The volume is divided into two parts: the first offers an extended summary of organ performance practices in Spain from the sixteenth through the eighteenth centuries, based on some of the major theoretical treatises and keyboard tutors of the period, by such authors as Juan Bermudo (1555), Tomas de Santa Maria (1565), Hernando de Cabezon (1578), Francisco Correa de Arauxo (1626), and Pablo Nassarre (1723-24); the second is an anthology of Spanish organ music from the same time span, including a total of thirty-one pieces organized by degree of difficulty. The first part begins with an assortment of background information about uses of the organ in Spain, the church modes, Spanish keyboard tablature, types of composition in the Spanish organ literature, and so forth. A detailed account of the evolution of Spanish organs follows, including specifications, stoplists, and registrations for some of the major historical instruments of the period. After discussing hand position, johnson devotes sixteen pages to the study of fingering. Many possibilities are offered, some of which may be more useful than others to the modern keyboard student. Fingers 2, 3, and 4 (rather than all five fingers) often do most of the work in executing scale passages and ornaments. A typical fingering for a right-hand scale, for instance, would be 12343434 ascending and 43232323 descending. The practical advantages of using such paired fingering patterns may seem dubious to the average modern student. The resulting lateral hand shifts, however, undoubtedly contributed to the detached touch that seems to have been the preferred norm of articulation in the period. After dealing briefly with pedaling and articulation and providing an exhaustive study of ornamentation, Johnson finishes his discussion of performance practice with sections on time signatures, tempo, and rhythmic alteration. The textual portion of the volume closes with bibliographies on pertinent historical treatises, modern editions of major individual composers, and principal modern anthologies of Spanish keyboard music of the period. The bibliography of secondary sources on performance practice and on Spanish organs is useful, although more schematic. Some major works on Spanish organs (such as Rudolf Reuter's Orgeln in Spanien [Kassel: Barenreiter, 1986] or several articles by Louis Jambou) have unfortunately been omitted, as have the classic studies on Spanish keyboard performance practice by Eta Harich-Schneider. The pedagogical value of this first part of the book is enhanced by the clear and well-organized presentation of the material and by the frequent exercises that allow the student to practice the techniques under discussion on actual passages of music from the period. The publication, cataloguing, and critical study of Spanish seventeenth- and eighteenth-century music constitute a glaring musicological lacuna. Because the publication of an anthology of organ music from this period thus entails the responsibility of making available to the American public music from a country and a period that is mostly unfamiliar, the choice of composers and pieces becomes a crucial matter. …