Dr. Klaus Frieler, born 1967, studied theoretical physics and mathematics in Hamburg and graduated 1997 with a diploma. After years working in the software industry, he finished his Ph.D. in Systematic Musicology in 2008 with a dissertation on mathematical models of melody cognition. He currently holds a position as a lecturer for Systematic Musicology at the University of Hamburg. Additionally, he also works as music expert witness (www.musikgutachten.de), scientific consultant and programmer. His main research interests are modelling of music cognition, music creativity, mathematical music theory, music information retrieval and popular music research.