Oct 27, 2010 Opening ceremony, 69th annual meeting of the Japan Neurosurgical Society in Fukuoka, hosted by Kyushu University
Conductor: Masaaki Hayakawa
May 9, 2010 Opening ceremony, 30th annual meeting of the Japanese Congress of Neurological Surgeons in Yokohama, hosted by Yamanashi University
Conductor: Masaaki Hayakawa
May 17, 2009 Opening ceremony, 29th annual meeting of the Japanese Congress of Neurological Surgeons in Osaka, hosted by Okayama University
Conductor: Masaaki Hayakawa
Conductor: Masaaki Hayakawa
Piano: Chiharu Sudo
Oct 1, 2008 Opening ceremony, 67th annual meeting of the Japan Neurosurgical Society in Morioka, hosted by Iwate Medical University
Conductor: Masaaki Hayakawa
May 9, 2008 Before evening seminar, 28th annual meeting of the Japanese Congress of Neurological Surgeons in Yokohama, hosted by National Cerebral and Cardiovascular Center
Conductor: Masaaki Hayakawa
Oct 6, 2007 Public lectures, as 20th anniversary concert at Shinagawa
Conductor: Masaaki Hayakawa
Oct 2, 2007 Presidential banquet, 66th annual meeting of the Japan Neurosurgical Society in Tokyo, hosted by Tokyo Wemen’s Medical University
Conductor: Masaaki Hayakawa
May 18, 2007 Opening ceremony, 27th annual meeting of the Japanese Congress of Neurological Surgeons in Sendai, hosted by Tohoku University
Conductor: Masaaki Hayakawa
Oct 18-19, 2006 65th annual meeting of the Japan Neurosurgical Society in Kyoto, hosted by Kyoto University
Conductor: Masaaki Hayakawa
Jun 8, 2006 Reception, 12th International Symposium on Pediatric Neuro-Oncology in Nara, hosted by Saitama Medical University
Conductor: Masaaki Hayakawa
Soprano: Mio Akisono (Musisal actress, a prior member of Takarazuka Review)
May 14, 2006 Reception, 26th annual meeting of the Japanese Congress of Neurological Surgeons in Tokyo, hosted by Juntendo University
Conductor: Masaaki Hayakawa
Oct 4, 2005 Presidential banquet, 64th annual meeting of the Japan Neurosurgical Society in Yokohama, hosted by Keio University
Conductor: Masaaki Hayakawa
May 13, 2005 Opening ceremony, 25th annual meeting of the Japanese Congress of Neurological Surgeons in Kokura, hosted by Yamaguchi University
Conductor: Masaaki Hayakawa
Oct 6, 2004 Opening ceremony, 63rd annual meeting of the Japan Neurosurgical Society in Nagoya, hosted by Nagoya University
Conductor: Masaaki Hayakawa
May 14, 2004 Opening ceremony, 24th annual meeting of the Japanese Congress of Neurological Surgeons in Tokushima, hosted by Tokushima University
Conductor: Masaaki Hayakawa
Oct 1-2, 2003 62nd annual meeting of the Japan Neurosurgical Society in Sendai, hosted by Tohoku University
Conductor: Masaaki Hayakawa
Oct 2-3, 2002 Opening ceremony, 61st annual meeting of the Japan Neurosurgical Society in Matsumoto, hosted by Shinshu University
Conductor: Masaaki Hayakawa
Oct 24-25, 2001 Opening ceremony, 60th annual meeting of the Japan Neurosurgical Society in Okayama, hosted by Okayama University
Conductor: Masaaki Hayakawa