The Stockholm Music Acoustics Conference (SMAC 2013) continues the series of music acoustics conferences in Stockholm, started 30 years ago. Following the tradition of SMAC 83, SMAC 93, and SMAC 03, SMAC 2013 covers the traditional fields of music acoustics, including musical instruments, singing voice, perception, and physical modeling.The proceedings of SMAC 2013, July 30 - August 3, 2013, are peer-reviewed and include the contributions from 215 authors from all over the world. The theme for SMAC this year is "Sound Science, Sound Experience." During the past five decades, the domain of music acoustics has widened from studies of the acoustics of musical instruments and voice, including basic elements of musical perception and performance, to investigations of how humans experience and interact with sounds and music. Increasingly, the knowledge is put into industrial, societal and psychological perspectives. The age-old dream of bridging science and art has found new and bountiful ground in the field of Sound and Music Computing. SMAC 2013 is hosted by the Sound and Music Computing Research Group at the Royal Institute of Technology (KTH) in Stockholm, Sweden.