I'm reading some essays about the Romanian conductor Sergiu Celibidache (1912-1996), who taught Dumitrescu and seems to have had a great influence on him. Many of the big themes in Dumitrescu's ideas are addressed already by Celibidache - Husserl and phenomenology, Zen and so on. He seems like a rare character, very forceful and opinionated. One seismic difference between the two is over the question of recording - Celibidache famously was against his work being recorded, while Dumitrescu considers the recording to be everything (during Acousmania 2006 I overheard him saying that a CD is not a 'copy' of the music but is 'an original')