1. Department of Music Education, Universitat Autònoma de Barcelona, Cerdanyola del Vallès, Catalonia, Spain
2. Department of Learning and Leadership, UCL Institute of Education, London, UK
3. Department of Culture, Communication and Media, UCL Institute of Education, London, UK
4. Department of Education, International University of Catalonia, Barcelona, Catalonia, Spain
5. Area Leader for Music Education, Royal College of Music, London, UK
6. Department of Mathematics Education, Universitat Autònoma de Barcelona, Cerdanyola del Vallès, Catalonia, Spain