String Instruments

Quartet Integra
  MISAWA Kyoka(Violin)KIKUNO Rintaro(Violin)
  YAMAMOTO Itsuki(Viola)TSUKIJI Anri  (Cello)

(c)Daniel Delang

Described as having “an enormous wealth of colors… and sparkling rhythms”
(All News Press), Quartet Integra are quickly developing a reputation of international
prestige. In 2022, the Quartet won Second Prize and the coveted Audience Award at
the 2022 ARD International Music Competition, First Prize at the 2021 Bartók World Competition, and First Prize and the Prize of Beethoven and Grand Prix Award at the 2019 Akiyoshidai Music Competition. Additionally, Quartet Integra have received the prize Banca Monte dei Paschi in the 2021 Accdemia Musicale Chigiana, the Kirishima International Music Festival Prize and Tsuyoshi Tsutsumi Music Director Prize in the 2021 Kirishima International Music Festival.
Upcoming performances include over twenty performances throughout Japan including the Kanazawa, Takefu International Festivals and at venues such as Tokyo Opera City, Toppan Hall, and Suntory Hall, among others. Additionally, they have performances planned as part of the Discovery Series at the La Jolla Music Society, the California Club in Los Angeles, and Thayer and Zipper Halls at the Colburn School. Quartet Integra has performed and worked with artists including Tsuyoshi Tsutsumi, Kazuhide Isomura, Shigeo Neriki, and Kazuhide Isomura.
Quartet Integra are active festival participants. They were invited by Günter Pichler (formerly of the Alban Berg Quartet) to attend the Chigiana Summer Festival in Siena on a scholarship and have attended festivals such as Crans Montana Classics, Toyama Chamber Music Festival, and Kirishima International Music Festival. Committed to contemporary works, Quartet Integra has commissioned many new works from Japanese composers and have given over a dozen world premieres. They have participated in coachings and master classes with Jean-Yves Thibaudet, Milena Pajaro-Van de Stadt, Jean-Guihen Queyras, and the Jerusalem, Henschel, Atrium, Voce, and Shanghai String Quartets.
Quartet Integra, consisting of first violinist Kyoka Misawa, second violinist Rinato Kikuno, violist Itsuki Yamamoto, and cellist Anri Tsukiji, formed in 2015 and began their studies with Kazuhide Isomura and Nobuko Yamazaki at Toho Gakuen School of Music. They continued their academic work as a quartet as fellows at the Suntory Hall Chamber Music Academy. They are currently enrolled in the Chamber Ensemble-in-Residence Program at the Colburn School, where they study with Martin Beaver, Clive Greensmith,
and Tatjana Masurenko. Quartet Integra is supported by grant funding from the Matsuo Foundation and are on the roster of Colburn Artists.


SHIRAI Kei (Violin)

Japanese violinist Kei Shirai was born in Trinidad and Tobago and began playing the violin at the age of three. As a child he was taught by Tsugio Tokunaga and, while studying at Geidai University of the Arts in Tokyo, by Chikashi Tanaka and Miyoko Yamane-Goldberg. Upon his graduation in 2007, Kei Shirai was awarded a Japanese Government Scholarship to continue his studies at the University of Music and Performing Arts in Vienna with Johannes Meissl. Among his awards at major international competitions are the second prize and the audience prize at the 2009 ARD Competition in Munich. Kei enjoys a multi-faceted career as a recitalist, concerto soloist and chamber musician. His concert engagements take him frequently to Japan’s biggest venues and festivals. In Europe he performs regularly with the Stefan Zweig Trio and the Ludwig Chamber Players: an acclaimed mixed instrumentation ensemble based in Stuttgart.  Kei Shirai is a concert master of the Kobe City Chamber orchestra, a post he has held since 2013.


©Hisao Suzuki

GOKO Sunao  (Violin)

Winner of the First Prize and the Audience and contemporary music awards at the 2013 International Tibor Varga Violin Competition Sion Valais, Sunao Goko is one of the most noteworthy violinists both in Japan and internationally.

Born in 1993 in Tagajo, Miyagi Prefecture, Goko has performed with numerous orchestras under conductors such as Gerhard Bosse, François-Xavier Roth, Michiyoshi Inoue and Kentaro Kawase, since his 2007 debut as soloist. He achieved a 3-year performance cycle of the complete Beethoven violin sonatas, a project he has worked since 2017. His previous teachers include Mami Teshigawara, Gerhard Bosse, Akiko Tatsumi and Pavel Vernikov and he has participated in masterclasses with Jean-Jacques Kantorow and Ana Chumachenco. He plays the 1682 “Banat” Stradivarius. Guest Concertmaster of NHK Symphony Orchestra since April, 2023.


YAMANE Kazuhito(Violin)
Born in Sapporo(Japan) in 1995, Kazuhito Yamane began playing the violin at the age of five.
In 2010,he won the first prize at the 79th Japan Music Competition . He was the youngest winner in the past 26years and he was also awarded the Masuzawa-, Iwatani (audience prize)and ,Kuroyanagi-,Sumi-, Reukadia-prize at the same time.
Kazuhito Yamane has played not only as a recital , but also as a soloist of orchestra, as a chamber music player at concerts in Italy, Germany and Japan. He is also regularly invited by famous music festivals. As a soloist ,he has performed with the following orchestras: the City of Birmingham Symphony Orchestra, Prague Camerata, Munch Symphony Orchestra,NHK Symphony Orchestra, Tokyo Philharmonic Orchestra, Tokyo Metropolitan Symphony Orchestra, Tokyo Philharmonic Orchestra, Japan Philharmonic Orchestra, Tokyo City Philharmonic Orchestra, Sapporo Symphony Orchestra, Kyoto Symphony Orchestra, Nagoya philharmonic Orchestra ,Orchestra Ensemble Kanazawa.
From 2011 to 2014 he attended the Music High school and Soloist Diploma Course attached to the Faculty of Music, Toho Gakuen University and studied under Prof. Koichiro Harada as a scholarship student.
Currently he has been studying at Hochschule für Musik und Theater München under Prof.Christoph Poppen.
He received the Idemitsu Music Prize, Kyoto Aoyama Music Prize in 2015 and The Hotel Okura Music Award in 2017.


©Sihoo Kim

MOHRI Fumika(Violin)

In 2012 Fumika Mohri won the first prize in the Seoul International Music Competition becoming the youngest ever and very first Japanese first-prize winner in the history of the competition. In 2015 she won the second prize in the Premio Paganini International Violin Competition and the sixth prize in the Queen Elisabeth International Music Competition. She also won the 3rd prize in the Montreal International Music Competition in 2019.

​​As a soloist, Fumika Mohri has performed with major orchestras around the world such as the Tokyo Symphony Orchestra, Korean Symphony Orchestra, Munich Chamber Orchestra, Orchestre National de Belgique, Brussels Philharmonic, Orchestre symphonique de Montréal, Kremerata Baltica and Chamber Orchestra of Europe. She has also collaborated with eminent artists including Sir András Schiff, Abdel Rahman El Bacha, Ilya Gringolts, Nobuko Imai, Tabea Zimmermann and Tsuyoshi Tsutsumi. She gave her debut recital at Kioi Hall, Tokyo in 2016. She has studied with Kaori Tajiri, Sachika Mizuno, and Koichiro Harada. In 2014 she completed the Soloist Diploma Course of the Toho Gakuen School of Music. Since 2015 she has been studying with Mihaela Martin at the Kronberg Academy and Hochschule für Musik und Tanz Köln.


HOKAMURA Risa(Violin)

Japanese violinist Risa Hokamura first came to international attention upon winning second prize at the 2018 International Violin Competition of Indianapolis. Later that year, she won first prize at the 2018 Young Concert Artists International Audition along with special prizes which offer career management and recital debuts in NY, Washington DC and Boston. She has performed with notable orchestras including Indianapolis Symphony Orchestra, East Coast Chamber Orchestra, Muncie Symphony Orchestra, Greensboro Symphony Orchestra, Kanagawa Philharmonic Orchestra, New Japan Philharmonic Orchestra, Tokyo Philharmonic Orchestra, Kansai Philharmonic Orchestra, Tokyo Symphony Orchestra and Sapporo Symphony Orchestra. A native of Japan, Risa Hokamura began the violin at the age of 3, and began studying with Kenji Kobayashi at the age of 7. She started to capture top prizes in competitions in Japan at the age of 10. She has studied at the Tokyo College of Music High School as an Honorary Scholarship student under the tutelage of Koichiro Harada, Mayuko Kamio and Machie Oguri. She is currently pursuing Bachelor of Music in Violin Performance at Manhattan School of Music as a Full Scholarship student under the tutelage of Koichiro Harada and Lucie Robert. She also studies at the Artist Diploma Program at Tokyo College of Music as an Honorary Scholarship student under the tutelage of Koichiro Harada, Mayuko Kamio and Machie Oguri. Risa plays the 1715 “Joachim” Stradivarius violin on loan from the Nippon Music Foundation.


HEMMI Yasutaka(Violin)
Yasutaka Hemmi is one of the most dynamic and active violinists for contemporary music in Japan. He has performed in Japan, Belgium, the Netherlands, France, Italy, Germany, Denmark, Norway, Slovenia, Hungary, Australia, the United States, Canada, Mexico, South Africa, South Korea and Hong Kong, and has been invited to various international festivals.
He has worked with major composers such as Toshio Hosokawa, Joji Yuasa, Akira Nishimura, Brian Ferneyhough, Helmut Lachenmann, Ivan Fedele, Jörg Widmann, Michael Jarrell and given literally dozens of world and Japanese premieres of new works. He has invented new techniques for the violin and has collaborated with many composers, dancers, visual artists, and actors. From 2001 to 2003 he was one of the core members of ChampdAction (Belgium) as a violinist, and made artistic decisions in this ensemble. From 2003 he has been a member of ‘next mushroom promotion’ (Osaka). He has also performed as a duo called X[iksa] with Japanese harpist Takayo Matsumura for more than 15 years.
Hemmi’s solo CD Violin Encounters was released through Megadisc (Belgium) in 2004. It includes the Berio Sequenza VIII, Brian Ferneyhough’s Intermidio and most important, the world premiere recording of Ferneyhough’s Unsichchtbare Farben.
His performances are also available on several other CDs and DVDs. In January 2012 he gave a recital of the complete Freeman Etudes by John Cage, organized by JSCM, which had not been performed by a Japanese violinist before.
His lectures on techniques of contemporary music, for example at Stanford University in 2007, have stimulates composers to write new works.


Luosha FANG  (Viola)




YAMAMOTO Shu (Viola)










UENO Michiaki(Cello)
Michiaki Ueno’s eloquent performance and charisma spellbind audiences. He has been praised for his unique yet natural musicality and superlative technique. It is unsurprising that Yo-Yo Ma hailed him as a “fabulous cellist.” Born in Paraguay in 1995, Michiaki started his cello studies at the age of five in Japan. In 2001 he moved to Barcelona, Spain where he studied with Iñaki Etxepare. After returning to Japan in 2004, he has studied at the Toho Gakuen College Music Department, Soloist Diploma Course with a full scholarship under the tutelage of Hakuro Mohri. In 2015, he moved to Germany where he studied with Pieter Wispelwey at the Robert Schumann Hochschule Düsseldorf. Since 2021, he is an artist-in-residence at the Queen Elisabeth Music Chapel in Belgium, where he studies with Gary Hoffman and Jeroen Reuling. In 2007 at the age of eleven, he gave his first concerto performance at the prestigious Suntory Hall, playing the Lalo Cello Concerto. This later led to his success in becoming the first ever Japanese winner of the International Tchaikovsky Competition for Young Musicians held in 2009 at the age of thirteen. A year later, he won first prize in the Romanian International Music Competition along with the Romanian Embassy Prize and the Romanian Radio Culture Prize. He won first prize in the International Johannes Brahms Competition in 2014. His most recent award was first prize in the Geneva International Music Competition in 2021 along with three special awards, including the Young Audience Prize.
He has participated in several music festivals and seminars, including the Festival Pablo Casals in Prades, Verbier Festival, International Music Festival Nippon, Takefu International Music Festival, International Musicians Seminar Prussia Cove, and Kronberg Academy. He has received masterclasses from Steven Isserlis, Frans Helmerson, Ivan Monighetti, Miklós Perényi, and Jian Wang among many other great maestros.
As a soloist, he has performed with numerous orchestras such as the Orchestre de la Suisse Romande, Warsaw Philharmonic Orchestra, Lahti Symphony Orchestra, Gyeonggi Philharmonic Orchestra, Yomiuri Nippon Symphony Orchestra, and New Japan Philharmonic among many others. As a chamber musician, he has shared the stage with artists including Jean-Guihen Queryas, Daniel Sepec, Jose Gallardo, Akiko Suwanai, and Tsuyoshi Tsutsumi. Michiaki has received numerous awards such as the “Foundation for Youth Award” (2011), the “Honorable Award” (2015) from the Iwatani Tokiko Foundation, and the “Aoyama Music Prize” (2017) as a promising rising star. He has been generously supported by the Japan Federation of Musicians, Rohm Music Foundation, Ezoe Memorial Recruit Foundation, Dr. Sieghardt Rometsch Stiftung, and Dr. Carl Dörken Stiftung. Michiaki plays a P.A. Testore cello on loan from the Munetsugu Collection.


OKAMOTO Yuya(Cello)

HE WON SECOND PRIZE and Eugène Ysaÿe Prize – ELGIAN FEDERAL GOVERNMENT PRIZE,awarded by the Belgian Science Policy QUEEN ELISABETH INTERNATIONAL MUSIC COMPETITION of BELGIUM 2017. Born in Tokyo 1994. Yuya Okamoto received his first cello lessons at the age of six. In 2008 he won the Prize
“Diploma of Merit” at the Gasper Cassado International Cello Competition in Hachioji (Tokyo). In 2011 he won first prize, Masuzawa-, Kuroyanagi-, Tokunaga-, Iwatani- (Audience-) prizes at the 80th Japan Music Competition.
He participated in Saito Kinen Chamber Music Study Group and Seiji Ozawa Ongaku-Juku. From 2010 to 2013, he attended the Music High school attached to the Faculty of Music, Tokyo University of the Arts and studied under Prof. Nobuko Yamazaki. Since 2013 he studied at Hochschule für Musik und Theater München under Prof. Wen-Sinn Yang and since 2017 he has been studying at Graduiertenschule(Graduate School) under Prof. Julian Steckel, Ana Chumachenco and Hariolf Schlichtig. Also he took part in masterclasses and lessons of Prof. Wolfgang Boettcher, Prof. Miklos Perenyi, Prof. Gustav Rivinius, Prof. Natalia Gutman, Prof. Jens-Peter Maintz, Prof. Antonio Meneses, and Prof. Tsuyoshi Tsutsumi.
As a soloist, he has performed with the following orchestras:
Tokyo Philharmonic Orchestra, Tokyo Metropolitan Symphony Orchestra, New Japan Philharmonic, Japan Philharmonic, Yomiuri Nippon Symphony Orchestra, Tokyo City Philharmonic Orchestra, Sendai Philharmonic Orchestra, Kansai Philharmonic Orchestra, Hiroshima Symphony Orchestra, Ensemble of Tokyo, Brussels Philharmonic Orchestra, Antwerp Symphony Orchestra, Wallonie Royal Chamber Orchestra and Bad Reichenhaller Philharmonie ,etc. In the chamber music field, he has performed with pianists Michie Koyama and Kazune Shimizu, violinists Vadim Repin, and Arabella Miho Steinbacher, etc. It is special mention that Brahms’ Piano Quartets with pianist Krystian Zimerman co-starred in Italy and Japan in the fall of 2019, Monaco and Switzerland in June 2021 with great success in each country. He received the 25th Shin-nittetsu Sumikin Music Prize in 2015, 16th Hideo Saito Memorial Fund Award in 2017, 28th Idemitsu Music Award in 2018 and 20th Hotel Okura Music Award in 2019. He is Ezoe Memorial Foundation 42nd scholarships and Rohm Music Foundation Scholarships year 2013/2014 and 2014/2015.


MIZUNO Yuya(Cello)









SHINOHE Kana(Doublebass)

She graduated from Doshisha Women’s College of Liberal Arts the Department of Japanese Language and Literature, Osaka University of Arts the Playing Department.
She performs in various fields such as orchestra, chamber music and brass band.
She studied contrabass under Shuji Ikeuchi, Kazuo Okuda and Koji Miyake.
She is a performance personnel of Soai University, and a member of Ensemble “La Famille” and Brass Paradise Osaka.