Saxophone Quartet
PROFILE
Founded in 2007, Quatuor B brings together Sadahito Kunisue (soprano), Masaya Yamaura (alto), Sumichika Arimura (tenor), and Gentaro Koyama (baritone). The name reflects a shared coincidence: all four members have blood type B. The quartet performs throughout Japan and abroad, presenting repertoire from classical masterworks to approachable concert programs for schools and communities.
CONCERTS & ACTIVITIES
Upcoming engagements and verified past concerts are added progressively, with no cut-off year.
6 listed
Aomori · Iwaki Cultural Center Asobēru, HirosakiGoogle Maps ↗
Quatuor B guest appearance
Doors 13:00 · Starts 13:30 · General ¥1,500 · Junior and senior high students ¥500 · Elementary school age and under freeShinjuku, Tokyo · Artist Salon Dolce, Dolce Musical Instruments Wind Avenue TokyoGoogle Maps ↗
Quatuor B: Sadahito Kunisue, Masaya Yamaura, Sumichika Arimura and Gentaro Koyama
Doors 18:30 · Concert 19:00 · Unreserved seating: general ¥4,000; students ¥3,000Takamatsu, Kagawa · Asahi Danball Hall Kokubunji (Takamatsu Kokubunji Hall)Google Maps ↗
Quatuor B: Sadahito Kunisue, Masaya Yamaura, Sumichika Arimura and Gentaro Koyama
Ticket release date: 12 September 2026 · Doors 13:30 · Concert 14:00 · Unreserved seating: advance general ¥1,000, high-school students ¥500; ¥500 more at the door; free for junior-high students and younger · Programme: Ryota Ishikawa, Sanuki Fantasy; Desenclos, Saxophone Quartet; Quatuor B's evolving entertainment show, Becal Box; and moreSaitama, Saitama · Saitama City Industrial Cultural Center, 1F HallGoogle Maps ↗
Quatuor B · A family concert welcoming babies and expectant mothers
Doors 13:20 · Concert 14:00 · Scheduled end around 15:45, including intermission · Address: 5-4-3 Shimo-ochiai, Chuo-ku, Saitama (six minutes on foot from the east exit of Yono-hommachi Station on the JR Saikyo Line) · Adults ¥1,500 (junior-high age and older) · Children ¥500 (ages three through elementary school) · One child aged two or younger may sit on each adult's lap · Babies may attend from 60 days after birth and at least 48 hours after their first routine vaccination · Ticket Pia P-code: 337035 · Please read the organiser's health and safety guidance in advance and check the official website again on the day of the concertKurume, Fukuoka · Ishibashi Cultural HallGoogle Maps ↗
E Orchestra 20th Anniversary Concert, Vol. II · Featuring Quatuor B (Sadahito Kunisue, Masaya Yamaura, Sumichika Arimura and Gentaro Koyama), E Orchestra and guests
Morning: 11:00–12:00 (scheduled), Quatuor B stage · Afternoon: 14:00–16:00 (scheduled), guests and E Orchestra 20th anniversary stage · All seats reserved · Morning: general ¥1,500; elementary-school age and younger ¥1,000 · Afternoon: general ¥2,000; elementary-school age and younger ¥1,000 · Two-concert pass: general ¥3,000; elementary-school age and younger ¥1,500 (¥500 discount) · If available, tickets at the door cost ¥500 more per performance. Two-concert passes are not issued on the day · Choir participants are invited to sing Kako, the finale of the Choral Suite Chikugo River, in the afternoon concert. Application deadline: 30 September 2026Fukuyama, Hiroshima · Fukuyama Arts and Culture Hall Reed & Rose, Main HallGoogle Maps ↗
Quatuor B (Sadahito Kunisue, Masaya Yamaura, Sumichika Arimura and Gentaro Koyama) with Sifa Wind Orchestra. Participants are invited to join the saxophone large ensemble and wind orchestra stages.
Doors 13:00 · Concert 13:30 · Admission: general ¥1,000; high-school students and younger ¥500116 listed
Tokyo · Kamata Onsen Dining Hall, 2FGoogle Maps ↗
A saxophone-quartet show of Latin favourites and Showa-era songs at Kamata Onsen
Doors 14:30 · Concert 15:00 · Unreserved seating ¥2,200 · 10 additional seats released from the guest allocation · Cash only at the dining hallManiwa, Okayama · Kashimura Elementary School, Multipurpose Room, 1FGoogle Maps ↗
Quatuor B: Sadahito Kunisue, Masaya Yamaura, Sumichika Arimura and Gentaro Koyama
School outreach · 13:55–14:40 · Audience: All pupils and local residentsManiwa, Okayama · Yubara Junior High School, Music RoomGoogle Maps ↗
Quatuor B: Sadahito Kunisue, Masaya Yamaura, Sumichika Arimura and Gentaro Koyama
School outreach · 10:45–11:35 · Audience: All pupilsManiwa, Okayama · Kawakami Elementary School, Music Room, 2FGoogle Maps ↗
Quatuor B: Sadahito Kunisue, Masaya Yamaura, Sumichika Arimura and Gentaro Koyama
School outreach · 13:55–14:40 · Audience: First- and second-grade pupilsManiwa, Okayama · Yatsuka Elementary School, Music Room, 2FGoogle Maps ↗
Quatuor B: Sadahito Kunisue, Masaya Yamaura, Sumichika Arimura and Gentaro Koyama
School outreach · 10:45–11:30 · Audience: First- and second-grade pupilsFukuoka · Ishibashi Cultural Hall, KurumeGoogle Maps ↗
E Orchestra 20th Anniversary Project
Doors 13:00 · Concert 13:30 · Reserved seating: general ¥2,500; high-school students and younger ¥1,000; free for children under 3Nagano · Charmant TogakushiGoogle Maps ↗
Performed by Quatuor B
Doors 11:30 · Starts 13:00 · Free admission · No advance registrationUeda, Nagano · Hall Kodama, Shinshu International Music VillageGoogle Maps ↗
Sadahito Kunisue, soprano saxophone; Masaya Yamaura, alto saxophone; Sumichika Arimura, tenor saxophone; Gentaro Koyama, baritone saxophone
Doors 18:30 · Concert 19:00 · Programme: Florio, Allegro de Concert; Desenclos, Saxophone Quartet; Rossini, arr. Bacco, Rossini for Quartet; Quatuor B's evolving entertainment show, Becal BoxSaitama, Saitama · Saitama City Industrial Cultural Center, 1F HallGoogle Maps ↗
Quatuor B · Hand-play songs, sing-along songs, Kotori Forest Quartet, adult requests and Becal Box
Doors 13:20 · Concert 14:00 · Scheduled end around 15:45 · Unreserved seating: adults ¥1,500 for junior-high age and older; children ¥500 for ages three through elementary school; one child age two or younger may sit on each adult's lapNago, Okinawa · Main Hall, Nago Civic HallGoogle Maps ↗
Eri Unoki, soprano and narrator; Kenichi Nakagawa and Yukari Arai, piano; Quatuor B: Sadahito Kunisue, Masaya Yamaura, Sumichika Arimura and Gentaro Koyama
Morning: doors 09:30, concert 10:00 · Afternoon: doors 13:30, concert 14:00 · General admission ¥500; free for high-school students and younger with a ticket · Picture-book readings and Quatuor B's evolving entertainment show, Becal BoxMarugame, Kagawa · Small Hall, Marugame Ayauta General Cultural Center IlexGoogle Maps ↗
Sadahito Kunisue, soprano saxophone; Masaya Yamaura, alto saxophone; Sumichika Arimura, tenor saxophone; Gentaro Koyama, baritone saxophone
Doors 13:30 · Concert 14:00 · Programme: Ryota Ishikawa, Sanuki Fantasy; F. and M. JeanJean, Saxophone Quartet; Rossini, arr. Bacco, Rossini for Quartet; Quatuor B's evolving entertainment show, Becal BoxShinjuku, Tokyo · Tokyo Opera City Building, 2F Office LobbyGoogle Maps ↗
Sadahito Kunisue, Masaya Yamaura, Sumichika Arimura and Gentaro Koyama
Performances at 12:30, 3:30 and 17:45, 20 minutes each · Free admission · Programme: Mozart, Divertimento K.136, first movement; Bach, Air on the G String; Ryota Ishikawa, Furusato Fantasy; JeanJean, Saxophone Quartet, fourth movement
NEW GOODS
Meet the members of Quatuor B in a new set of expressive LINE stickers, created by Kuratsu, a participant in the Becal Academy.
DISCOGRAPHY
Selected recordings featuring Sadahito Kunisue with this ensemble.
2010
2013
2017
2022More information
Official page ↗