CMMR is an annual event focusing on important aspects of computer music. CMMR 2008 was the ?fth event in this series and was co-organized by A- borg University Esbjerg, Denmark (http://www.aaue.dk), the Laboratoire de M' ecanique et d'Acoustique, CNRS in Marseille, France (http:/www.lma.cn- mrs.fr) and the Network for Cross-Disciplinary Studies of Music and Meaning, University of Southern Denmark (http://www.ntsmb.dk/). The conference was held in Copenhagen, May 19-23, 2008. The four previous editions of CMMR gathered a large number of notew- thy papers by researchers from the ?eld of computer music. The proceedings of these conferences were published in the Lecture Notes in Computer Science series (LNCS 2771, LNCS 3310, LNCS 3902 and LNCS 4969). The present e- tion follows the lineage of the previous ones, including a collection of 21 papers specially reviewed and corrected for this proceedings volume. The ?eld of computer music embraces a large number of research areas that span from information retrieval, programming, arti?cial intelligence to aco- tics, signal processing and sound modeling. In the last CMMR gatherings an increased emphasis was placed on the role of human interaction at all levels of musicalpractice,aswellasperceptualandcognitiveaspects inorderto establish relationsbetweenthestructureofsoundsandtheirimpactonhumanbeings.The identi?cation of perceptually relevant sound structures is linked to the notion of the sense of sounds, which was the title of the CMMR 2007 conference.