Visualizing Musical Transformations

The issues with comparing versions of a transformed XML document have been discussed many times. A special challenge, however, arises when the transformations of a document are musical in nature, rather than the more usual editorial changes. An XSLT visualizer can be modified to render musical scores to SVG and enable visual comparisons of the transformation results.

Handel’s Transformative Compositional Practices

In recent decades singers of Handel’s music have made great strides in recapturing the art of embellishing his music, thus breathing new life into forms such as the da capo aria. Yet Handel’s own “variations”—his development and transformation of musical material in his vocal music, important for understanding his compositional practice with borrowed as well as (presumably) original music—are not yet fully explored or appreciated. Admittedly, scholars have discussed musical procedures such as inserting, deleting, and reordering musical materials, as well as other Baroque combinatorial practices in Handel’s arias, but the musical transformations I discuss here are closer to a specifically Handelian brand of developing variation. To my knowledge, the concept of developing variation has never before been applied to early eighteenth-century music. I explore the relation of developing variation to drama (also rarely done) in two of Handel’s arias, providing a close examination of “Ombre, piante” from the opera Rodelinda and new thoughts about “Lament not thus,” originally intended for the oratorio Belshazzar. Although these arias belong to different genres and different stages of Handel’s career, they both exhibit material that undergoes a kind of progressive variation process that has tangible musical and dramatic ramifications, of interest to opera specialists and performers. Furthermore, both arias have a complicated compositional history; I offer fresh insights into the aesthetic qualities of each version, thereby throwing light on Handel’s possible compositional intentions. This article also discloses for the first time some recurring musical passages shared between “Lament not thus” and other pieces that could influence the listener’s interpretation of certain musico-dramatic gestures.

Musical transformations of non-places

The twentieth and twenty-first century have been a temporary canvas where two closely related concepts have broadened, both in terms of modernity and supermodernity: ambient music and the development of urban spaces. Both phenomena undergo a development, interaction and sustained change process, largely caused by technological changes. For the purpose of this study, first the concept of "non-places" and its change from physical spaces to virtual spaces will be presented. In second place, the development of ambient music is specifically considered; first regarding the close relationship that it establishes with non-places and then the generation of atmospheres through collective sound spheres. Subsequent technological transformations spread and fragment the associations between non-places and music, enabling personal atmospheres through individual spheres. At present, technological developments allow virtual non-places to take shape (Augé), which are environmentally filled thanks to playlists through streaming services. Subsystems of delocalised networked spheres and temporary spheres are established, yet they are emotionally contiguous. This article presents the humanising role that music has experienced within this urban growth process in western societies, which have developed over the last century.

Representation of Musical Structures and Processes in Simplicial Chord Spaces

In this article, we present a set of musical transformations based on the representations of chord spaces derived from the Tonnetz. These chord spaces are formalized as simplicial complexes. A musical composition is represented in such a space by a trajectory. Spatial transformations are applied on these trajectories and induce a transformation of the original composition. These concepts are implemented in two applications, the software HexaChord and the Max object bach.tonnetz, dedicated to music analysis and composition, respectively.