Question: Sergi Jordà, is a Catalan innovator, installation artist, digital musician and Associate Professor at the Music Technology Group, Universitat Pompeu Fabra in which city, he is also a trained Physicist, a scientist who has specialized knowledge in the field of physics, the exploration of the interactions of matter and energy across the physical universe?
Context: Pompeu Fabra University (Catalan: "Universitat Pompeu Fabra" , ] ; UPF) is a public university in Barcelona, Catalonia, Spain.  Founded in 1990, the university is named for the linguist Pompeu Fabra, an expert on the Catalan language, credited with standardising this once-disused language and revising it, giving it the status it holds today. The Music Technology Group (MTG) is a research group of the Department of Information and Communication Technologies of the Universitat Pompeu Fabra, Barcelona.  It was founded in 1994 by its current director, Xavier Serra, and it specializes in sound and music computing research. Ricard Zapata-Barrero is a political scientist specializing in immigration and diversity management in liberal democracies.  He is Professor at the Universitat Pompeu Fabra (Barcelona, Spain).  He has been visiting professor in Quebec.  He is founder of the GRITIM-UPF (Interdisciplinary Research Group on Immigration), a multi-disciplinary group of researchers interested in the aspects of innovation in research and management of change processes arising from human mobility and immigration.  He is also director of the Official Master of Immigration Management at Universitat Pompeu Fabra. The Science Communication Observatory (Catalan: "Observatori de la Comunicació Científica" , Spanish: "Observatorio de la Comunicación Científica" , OCC) is a Special Research Centre attached to the Department of Communication of the Pompeu Fabra University in Barcelona, Spain, set up in 1994.  This centre is specialized in the study and analysis of the transmission of scientific, medical, environmental and technological knowledge to society.  The journalist Vladimir de Semir, associated professor of Science Journalism at the Pompeu Fabra University, was the funder and is the current director of the centre.  A multidisciplinary team of researchers coming from different backgrounds (i.e. journalists, biologists, physicians, linguists, historians, etc.) is working on various lines of research: science communication; popularization of sciences, risk and crisis communication; science communication and knowledge representation; journalism specialized in science and technology; scientific discourse analysis; health and medicine in the daily press; relationships between science journals and mass media; history of science communication; public understanding of science; gender and science in the mass media, promotion of scientific vocations, science museology, etc. Núria Almiron Roig (born 1967 in Sabadell) is a Catalan researcher and PhD in journalism, specialized in communication and power relations.  She is a Professor in the Department of Communication of the Universitat Pompeu Fabra (UPF) since 2008 and, previously, of the Universitat Autònoma de Barcelona (UAB). Sergi Jordà (born November 15, 1961) is a Catalan innovator, installation artist, digital musician and Associate Professor at the Music Technology Group, Universitat Pompeu Fabra in Barcelona.  He is best known for directing the team that invented the Reactable.  He is also a trained Physicist. The Reactable is an electronic musical instrument with a tabletop tangible user interface that was developed within the Music Technology Group at the Universitat Pompeu Fabra in Barcelona, Spain by Sergi Jordà, Marcos Alonso, Martin Kaltenbrunner and Günter Geiger. Josep Joan Moreso (Tortosa, Spain, 27 March 1959) graduated in Law from the Universitat Autònoma de Barcelona (1983) where he also completed his PhD (1988), achieving high-class honours in both instances.  He has held teaching posts at the Universitat Autònoma de Barcelona (1988–1995); the Universitat de Girona (1996–2000) and the Universitat Pompeu Fabra (2000–2005).  Rector of the Universitat Pompeu Fabra from May 2005 to June 2013.  In October 2010, he was invested as doctor honoris causa of the Valparaíso University (Chile). A physicist is a scientist who has specialized knowledge in the field of physics, the exploration of the interactions of matter and energy across the physical universe. Jaume Subirana (] ) (born 15 March 1963 in Barcelona) is a Catalan writer, poet, and blogger.  He studied at the Universitat Autònoma de Barcelona and has taught at the Universitat Pompeu Fabra and the Open University of Catalonia, Barcelona.  He has served as dean of Institució de les Lletres Catalanes (2004–06).
Answer: Barcelona