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Robert Sullivan was Yamaha's main consultant for the NY Series project. Sullivan is an outstanding trumpeter and educator. The project began while he was assistant principal in the New York Philharmonic, and the collaboration was carried out simultaneously as Yamaha developed the CH trumpets in Chicago. The technical secrets learned from the two projects were combined together helping Yamaha learn even more about tonal colors, projection, intonation, and everything else needed to create a truly expressive instrument.