Carlos López Ullod obtained his PhD Degree at the Theoretical Physics Departament of the University of Zaragoza, where He was research fellow (1994-1998). His research interests focused in the development of parallel computation for calculations in physics: He was involved in the design, construction and utilization of dedicated hardware for the simulation of several models of Statistical Mechanics and Quantum Field Theories in the lattice. He is author of 12 research papers concerning numerical simulation techniques, optimization algorithms and parallel computation.

In 1998 He was working in the European Laboratory for Particle Physics (CERN), developing control software for the data acquisition of the ATLAS project. He also participated in the development of high speed network devices and switches for the future Large Hadron Collider (LHC) under construction at CERN. Those devices have been used later for the construction of High Performance Parallel Computers.

In 1999 He joined the Innovation Area of Aplicaciones en Informática Avanzada, as a place where to exploit his skills in problem solving, open mind and algorithms understanding in order to solve complex problems in the industry. He has developed solutions for optimization problems in logistics, management and optimal operation of electrical networks, modeling of markets and financial risk management among others. Actually He is the Director of the Algorithmic Technology Group of AIA which is in charge of the benchmark, upgrade and development of the algorithmic cores of the solutions offered to the AIA costumers.

Antti Karvonen has worked as a music and post-production recording engineer for more than 15 years. Before joining Polyphonic HMI he worked as a lecturer of Music Technology in Helsinki Polytechnic teaching recording tehniques in the department of Pop and Jazz Music, which is one of the biggest schools in rhythm music sphere in Europe.

In addition to long-term experience and studies in music - 12 years of classical music, piano, theory, history, composition and analisis - Antti Karvonen has a strong orientation in Information Technologies. He obtained Master's degree in Computer Science with honors from the University of Helsinki in 2001, and has worked as System Analyst and Product Manager in various companies in Helsinki and Madrid.

Besides music and IT-development projects he is enthusiastic for education and eLearning.

Julien Ricard studied acoustics and signal processing at the University of Le Mans (France) and at the Institute of Sound and Vibration Research (Southampton, UK). In 2001 he joined the Music Technology Group of the Pompeu Fabra University (Barcelona, Spain) to work as part of the research teams of the CUIDADO and AudioClas european projects on audio content analysis. His work focused mainly on the automatic extraction of perceptual sound features, and he published several papers on this subject in academic conferences. His research interests include audio content processing, auditory scene analysis and music cognition in general.