These include Luis Crouch of the Global Partnership for Education, Koji Miyamoto from the OECD, Kai-ming Cheng of the University of Hong Kong, David Istance of the OECD, Zhou Nanzhao of Beijing Normal University, and Daniel Wagner of the University of Pennsylvania.
Yet to principal bass trombone David Ridge, who has played contrabass trombone for San Francisco Opera "Ring" cycles, the advantages of following Wagner's specifications are significant.