 "They are here" (2008) is an interactive video and sound installation created for the 104 centre in Paris, in collaboration with IRCAM.Andrea Cera has worked on several research projects with IRCAM (Paris), NOTAM (Oslo), Integra Project, DIST (Genova).In 2011 he presented "Urban Musical Game", in collaboration with researchers from the Real-Time Musical Interactions team at IRCAM – Centre Pompidou, the design agency NoDesign and Phonotonic.