In an alphabetic listing by composer, this guide describes works for two or more keyboard instruments, and composed mainly since 1700. Maurice Hinson covers all the standard composers and introduces contemporary composers of merit. The range of combinations can be seen from the indexes, which contain such categories as works for two, three, four, or more pianos: for two or more pianos wth other instruments, voice, or tape; for piano and harpsichord; for two player pianos; and for two pianos tuned a quarter-tone apart. There are compositions to be performed on two pianos by one, two, three, and four players, as well as one work for two players, two left hands. For each entry Maurice Hinson provides the date of composition or publication, the publisher(s), the editions available, the number of pages, the performance time, and the level of difficulty. His remarks about the style, the performance problems, or the history of the piece are, as ever, insightful and delightful. Teachers, students, and performers eager to expand their repertoires will find a wealth of literature here.