Apr. 1981 Employed by Yamaha, Co. Ltd. ( http://www.yamaha.co.jp/ ) as an engineer.Concerned the development of Synthesizer and FM sound module LSI(Early PC sound module, digital synth sound module, etc.)Also concerned as a member of the "MIDI" device development project.The List of developments-DX7(Sound module, world's first full digital synthesizer)-DX100/27(Consummer type digital synthesizer)-TZ81Z(FM sound module, which is still used in techno type of sound production)-V50(Workstation type synthesizer, Equipments: Synth, Sequencer, rhythm tracks, data storage, etc.)-SY77(Workstation type synthesizer for Pro. use, FM+PCM Sound module)-A7000(Sampler for Pro. use, HDR equiped) Jul. 1995 Employed by FOR-A Co. Ltd. ( http://www.for-a.com/ ) as a system development manager for broadcasting.Concerned the development of Audio,Video Disk Recorder, digital audio switcher, etc.The list of development-DR-300A(Audio disk recorder for broadcasting)-DR-300(Video disk recorder for broadcasting)-LDR-110(Video disk recorder for broadcasting, OEM over sea)-Digital audio switcher (Special offer from broadcast station) Feb. 2000 Employed by Noel, Co. Ltd. as a product general managerConcerned the general management of "Indie music CD sales", Music web distribution and mobile official site. Sept. 2000 Taking office as a Chief director of Noel, Co. Ltd.Concernd the management and developement of members' service on mobile site.(Poke Shock Wave) Mar. 2001 Noel, Co. Ltd. merged into Listen Japan, Co. Ltd.Taking office as a Senior manager of Mobile contents section.Continued the management and developement of members' service on mobile site. Jun. 2001 Concerned the developement and management as a director of developement. Oct. 31 2001 Resigned Listen Japan, Co. Ltd. Nov. 1 2001 Established Jazz Interplay, Inc.