Wolfgang Amadeus Mozart: Fantasie und Sonate c-Moll, die Original-handschrift an Mozarts Clavier interaktiv zum Klingen gebracht (Fantasy and Sonata in C Minor, Interactive Recording from the Autograph on Mozart's own Fortepiano) [CD-ROM]. Salzburg: Internationale Stiftung Mozarteum, 2006. [Requires: Windows 98SE, ME, 2000, XP, or Mac OS X. 500 Mhz or higher (PC), G4 or higher (Macintosh), 64 MB RAM minimum, screen resolution 1024 x 768 with 32k colors, 4x speed CD-ROM or higher. Pricing: euro12.90] In 2001, the Packard Humanities Institute (PHI) announced the start of a new edition of Mozart's complete works: the Digital Mozart Edition (DME). This new edition, prepared in cooperation with the Internationale Stiftung Mozarteum (ISM) in Salzburg, will be published in digital format. Since the DME will be one of the first critical editions of music in digital format, it has caused a considerable amount of interest among musicologists and musicians. A digital edition of music poses quite a few challenges to the editors. One of the biggest challenges is to find a flexible yet efficient way of encoding the sources so that the computer can actually understand and work with the music. Another challenge, no less demanding, is the representation of the edition on the computer screen. There exists a variety of possibilities ranging from merely displaying a finished editorial text, to presenting a highly annotated edition that enables users to explore the various underlying sources interactively. Obviously this would require a set of sophisticated tools, including some that already exist, and others that have yet to be developed. The CD-ROM that is reviewed here offers some intriguing approaches to these issues. Although it does not contain an edition of music but rather an facsimile and it can be regarded as a prospect and test case for the digital presentation of Mozart's music as it is envisioned by the Digital Mozart Edition. This award winning CD-ROM,1 somewhat modestly labeled an interactive recording, has much to offer. First, it contains a recording of Mozart's Fantasy and Sonata in C Minor, K. 475 & 457, played from the autograph on Mozart's own fortepiano. Second, the CD-ROM features a high-resolution color facsimile of the autograph, which is, like the fortepiano, in the possession of the Mozarteum in Salzburg. Third, the disc includes accompanying texts that provide background information on the piece, the autograph, and Mozart's instrument. Some of these features are linked together interactively and enable the user to explore Mozart's work from various perspectives. The user may, for example, follow the autograph while listening to a performance of the music. At various points during the playback the user can decide whether to skip repeats, or omit or add ornaments. Not only can the recording be used interactively, but the facsimile also offers menus and tools. These enable the user to explore the physical makeup of the autograph by leafing through the manuscript, magnifying specific spots, and examining the original foliation. Finally, throughout the disc users can click on names, places, even elements in the facsimile for additional information. The CD-ROM is started and operated solely from the disc itself, a nice feature, since one does not have to install any software. The drawback is, nonetheless, that the playback may at times be interrupted since the drive needs extra time to find and read the data for alternate versions of the playback which are compiled on the fly. It is, however, possible to copy the content of the disc to one's hard drive in order to improve the performance. The program starts in a full screen view, which looks nice but is somewhat unwieldy if one would like to switch to other programs running on the computer while working with the CD-ROM (for example, when taking notes or looking up information). The menus and tools are designed well-all functions can be used intuitively-and the spacing and placement of information on the screen is always pleasant and never confusing. …