Sarah Chaker (Dr. phil.) studied musicology and German language at the Carl von Ossietzky University of Oldenburg. She is currently an assistant professor at the Department of Music Sociology (IMS) at the mdw University of Music and Performing Arts Vienna. Her research interests include street music, the transdisciplinary analysis of music, histories, theories and methods of music sociology, popular music (in particular metal music) and Musikvermittlung.Axel Petri-Preis is Senior Scientist and Deputy Director at the Institute for Music Pedagogical Research, Music Didactics and Elementary Music Making (IMP) at the mdw - University of Music and Performing Arts Vienna. Previously, he worked as a freelance music educator for institutions such as Neue Oper Wien, Philharmonie Luxemburg, Festspiele Mecklenburg-Vorpommern or Tonkünstler-Orchester Niederösterreich. He is co-founder and editor-in-chief of the International Journal of Music Medition (IJMM), co-spokesperson of the Forum Music Mediation at Colleges and Universities, and on the advisory board for the Platform Music Mediation Austria and the Young Ears Network. His research focuses on the education and training of musicians, on the social-transformative potential of music mediation, and on diversity-sensitive and power-critical music mediation.