In 1991 Honna presented works by Dutch and Japanese composers with the Hato Ensemble at the Amsterdam Concertgebouw, as part of a Holland-Japan Week. In the same year he made his debuts with the Zagreb Philharmonic and the „Arturo Toscanini“ Symphony Orchestra in Parma.
Tetsuji Honna has conducted numerous orchestras such as, the Hungarian State Philharmonic, the Zagreb Philharmonic, the Brno State Philharmonic Orchestra, the Orchestra Sinfonica dell Emilia Romagna “Arturo Toscanini, the Prague Radio Symphony Orchestra (also on a tour to Japan in June 1994 and 2006), the Romanian Radio Orchestra and the Mozarteum Orchestra Salzburg. In 1997 he made his debuts with the Philharmonia Orchestra London and conducted the Netherlands Philharmonic in Amsterdam, a concert which was followed by immediate re-invitations for several times. Also he conducted Viotta Ensemble which consists by the principal musicians of Royal Amsterdam Concertgebouw Orchestra with Nobuko Imai in Tokyo in 2005.
Honna has been invited to many international festivals including the Carinthischer Sommer in Austria, the Bartók Festival in Szombathely, Mostly Mozart in Tokyo, Seoul in Autumn 2000, Asian Music Festival 1992 and 2003, in 2005 and 2007 “Kogakudogen Shingakukyoso“ Modern Music Festival in Beijing and Hanoi, and Suntory Summer Festival 2007.
2008, he was invited to La Folle Journee au Japon with Vietnam National Symphony Orchestra, and in 2009 he will conduct “Filarmonica della Scala” in the flame of The festival Milano Musica (a festival of contemporary music, cooperating with the Teatro alla Scala).
In the opera world, he has directed modern works such as "Chung Hyang" by Toroku Takagi and "Orpheo of Hiroshima" by Yasushi Akutagawa, which was recorded and highly acclaimed. In 2004 Honna direced two exciting operas in Tokyo and Osaka with great acclaim: "Momo" by Toshi Ichiyanagi, and "Satyricon" by Bruno Maderna and many Mozart Operas.

He presents contemporary music enthusiastically and a repertory covers not only Olivier Messiaen, Pierre Boulez, and Tan Dun but also the genealogy of Japanese composers, such as Akira Ifukube, Fumio Hayasaka,Yasushi Akutagawa,Toru Takemitsu, Joji Yuasa, Somei Sato and Atsuhiko Gondai and so on.
Since 2001 he has been Music Adviser and Conductor of the Vietnam National Symphony Orchestra. In October 2004 he led this orchestra with great success on a Japan tour to Tokyo and Osaka and opened their subscription concert since season 2005.
In Japan Tetsuji Honna was appointed permanent conductor of the Osaka Symphony Orchestra (1995 - 2001) and Principal Conductor of the Japan Chamber Orchestra (1993 - 1997) which plays mainly 20th century music. From 1998 to 2001 Honna was Permanent Guest Conductor of the Nagoya Philharmonic Orchestra.
Currently, he is, in addition to his work with the Vietnam National Symphony Orchestra, Music Director of the Orchestra Nipponica, which was founded in 2003.

He has made many excellent recordings with Japan Philharmonic Orchestra, Orchestra Nipponica, Tokyo Metropolitan Symphony Orchestra, La Tempesta Chamber Orchestra (Finland) and Slovenian Philharmony.