Today there is the PhD thesis defence of Juha Arrasvuori in University of Tampere. Juha has worked on digital music, mobile media and games for numerous years, long working in Nokia Research Centre. When I first learned to know Juha in the DAC study group of digital culture he was researching synthetizer music of Jean Michel Jarre, but, today his finished thesis discusses the interplay of games (and game studies) with the playful creation of digital music. The opponent, professor Paul Théberge from Canada started by giving Juha credit for developing a consistent framework for discussing music composition and game play in close contact to and informing each other. The opponent also expessed concern about the possible culturally or artistically restricting consequences if ‘music games’ would become the major means for learning to create music.