This volume contains the ?nal proceedings for the Computer Music Modeling andRetrievalSymposium(CMMR2003).Thiseventwasheldduring26¿27May 2003 on the campus of CNRS/Universit¿ e de Montpellier II, located in Montp- lier, France. CMMR is a new annual event focusing on important aspects of computer music. CMMR 2003 is the ?rst event in this new series. CMMR 2003 was jointly organized by Aalborg University, Esbjerg in Denmark and LIRMM in France. The use of computers in music is well established. CMMR 2003 provided a unique opportunity to meet and interact with peers concerned with the cro- in?uence of the technological and creative in computer music. The ?eld of c- putermusicisinterdisciplinarybynatureandcloselyrelatedtoanumberofc- puter science and engineering areas such as information retrieval, programming, human computer interaction, digital libraries, hypermedia, arti?cial intelligence, acoustics, signal processing, etc. The event gathered several interesting people (researchers, educators, composers, performers, and others). There were many high-quality keynote and paper presentations that fostered inspiring discussions. I hope that you ?nd the work presented in these proceedings as interesting and exciting as I have. First of all, I would like to thank Marc Nanard, Jocelyne Nanard, and - olaine Prince for the very fruitful cooperation that led to the organization of this ?rst event in the CMMR series. I would also like to thank my colleague Kirstin Lyon for her help in compiling these proceedings. Finally, this volume would not have been possible without the help of Springer-Verlag, Heidelberg.

Some Projects and Reflections on Algorithmic Music.- Real-Time Beat EstimationUsing Feature Extraction.- Towards a General Architecture for Musical Archive Information Systems.- The Study of Musical Scales in Central Africa: The Use of Interactive Experimental Methods.- Evolving Automatically High-Level Music Descriptors from Acoustic Signals.- 'Ambiguous Live' - Exploring Collaborative, Dynamic Control of MIDI Sequencers.- Characterization of Musical Performance Using Physical Sound Synthesis Models.- Conserving an Ancient Art of Music: Making SID Tunes Editable.- "GMU" - An Integrated Microsound Synthesis System.- What Are We Looking for?.- Extraction of Structural Patterns in Popular Melodies.- Musical Pattern Extraction Using Genetic Algorithms.- Automatic Extraction of Approximate Repetitions in Polyphonic Midi Files Based on Perceptive Criteria.- Deriving Musical Structures from Signal Analysis for Music Audio Summary Generation: "Sequence" and "State" Approach.- Musical Style Classification from Symbolic Data: A Two-Styles Case Study.- FMF(Fast Melody Finder): A Web-Based Music Retrieval System.- The Representation Levels of Music Information.- "Leçons": An Approach to a System for Machine Learning, Improvisation and Musical Performance.- About the Role of Mapping in Gesture-Controlled Live Computer Music.- Designing Musical Interfaces with Composition in Mind.