BIOGRAPHY - class with Battle Cry

class with Battle Cry

class, a legendary vocal duo, is best known for its greatest hit song " Natsu-no-hi no 1993 " . They celebrated their 20th anniversary in 2013 following a personnel change of its members.

Original class member, Koso Okazaki (ko), took a hiatus in 2009 due to the death of his partner, Tsukui Katsuyuki. Tsukui left an encouraging message to his good friend, ko, "Don’t quit music!" This inspirational message convinced ko and guitarist, Tsuyoshi Kon, both of whom graduated from the same Junior high school, to reunite and form a new super band "Battle Cry" with other famous musicians in Japan.

The new band began performing together in 2010. Then, in 2013 on the 20th anniversary of class, Battle Cry produced a special version of the song "Natsu-no-hi no 1993".

Battle Cry created a special modern version of "Natsu-no-hi no 1993" as a tribute to Tsukui Katsuyuki. The band's goal was to make a special cover album of some of the most famous Japanese hit songs of 1993.




ko is a member of the original class duo. They were best known for their song "Natsu-no-hi no 1993". His answer song "Fuyu-no-hi no 2009" was also a big successful. After the death of Tsukui Katsuyuki, the other member of class, ko formed the rock band "Battle Cry" with a guitarist Tsuyosi Kon, His junior high school friend and mentor.
As owner and founder of the Battle Cry Sound record label, ko continues to produce artists and seek out new talent.

Tsuyoshi Kon

Tsuyoshi Kon(Guitar)

Kon Tsuyoshi debuted as a member of Panta&HAL. At the same time he became active as a studio musician and is now a famous guitarist accompanying many artists on recordings and live performances.
In 1979, Kon formed a band called PARACHUTE with Masaki Matsubara and a few others. " STUDIO CAT ", released in 1980, became Kon’s first solo album. It wasn't until 2009 that he released his second album, appropriately titled "2nd Album". In 2011, together with Akira Inoue, Hideo Yamaki, and Kenji Takamizu (also known as "Daibutsu"(meaning a statue of Buddha)), Kon released an album Inoyama Daikon. He also became the 16th recipient of the Professional Music Recording Award of Japan.

【Live Recording Accompanying Works】
Ayaka, Yōsui Inoue, Miki Imai, Hikaru Utada, Chihiro Onitsuka, Kai Band, Ryuichi Kawamura, class, Kumi Koda, Masashi Sada, Sukima Switch, SMAP, Akira Terao, Hideaki Tokunaga, Mika Nakashima, Miyuki Nakajima, hiro, Masaharu Fukuyama, Tomoyasu Hotei, Seiko Matsuda, Yumi Matsutoya, Yutaka Mizutani, Eikichi Yazawa, YUI, and others.

Yoshinobu Kojima

Yoshinobu Kojima(Keyboards)

In 1974, Yoshinobu Kojima started off his musical career as a supporting musician for acts such as Starking Delicious, Shinji Shiotsugu, Haruko Kuwana with Baler’s Shop, and Masahiro Kuwana.

His works are full of originality, with just the right mix of energy and quietness. The elegant tone of his songs are also praised highly by fellow musicians of the day.

In the 1980s Kojima stay busy doing studio work, arrangement, and production for many musicians, including artists from the U.S. like Jeff Baxter, Gordon Edwards. Nason Watts, Carlos Vega, Water Sisters, ICARUS JOHNSON, John and KEEN. At the end of 1994, he established a base for himself in New Orleans before going on tour in the U.S. and Europe. He also continued doing recording sessions with artists such as REWARD, TARA Alexandar, Wild Magnolia and many others.

The four years he spent playing and recording music in New Orleans certainly influenced Kojima’s fundamental style and sound. After returning to Japan, he continued to do recording, arrangement, and sound production for groups like Char, Paul Jackson, B.B.B. , TrickBack, his own trio "KOJIKANATSURU", and the rock band Battle Cry. He also did recording and live performances with many artists such as Syuichi "Ponta" Murakami and late great artists Takehiro Honda, Masahiro Kuwana and Ryudo Uzaki.

After returning to Japan, Yoshinobu formed the trio band "KOJIKANATSURU" and produced 3 original CDs.

In 2008, Kojima released his first solo album, Kojima. To this day he continues to do sessions with many musicians, including Kousuke Mine, Takanaka, shiho, KOJIKANAKAYAMA (Hideaki Kanazawa, Hideo Yamaki) and enjoys performing live shows with his piano trio as well.

Kojima's live recording collaborations include:
Yousui Inoue, Tetsuro Oda, KUWATA BAND, Masahiro Kuwana, Husanosuke Kondo, THE BLUE HEARTS, SMAP, Char, Syogo hamada, Masaharu Fukuyama, Nobuteru Maeda (Tube), Koshi Inaba, Atsushi, and many, many countless others.

Hideki Matsubara

Hideki Matsubara(Bass)

Matsubara Hideki debuted as a member of the band "ANKH". While recording, Matsubara met Shirō Sagisu and soonafter they started studio works together. He began accompanying various artists with his inherent groove base.

【Live Recording Accompanying Works】
Junichi Inagaki, Hiromi Iwasaki, Senri Oe, Ai Otsuka, Toshiki Kadomatsu, Kinki Kids, Shikao Suga, SMAP, Masayoshi Takanaka, Hideaki Tokunaga, Mika Nakashima, Miyuki Nakajima, Keizo Nakanishi, Chitose Hajime, Ayumi Hamasaki, Ken Hirai, Ayaka Hirahara, Masaharu Fukuyama, Toko Furuuchi, Noriyuki Makihara, Yumi Matsutoya, Yuzu, Sadao Watanabe, and others.

Kozy Hasegawa

Kozy Hasegawa(Drums)

From 1983 to 2005, Kozy played an active role as an exclusive drummer to the group "THE ALFEE". He expanded his opportunities by accompanying artists from Japanese pop idol groups to leading figures on a wide variety of sessions and recordings. In 1997, Kozy released a drum instructional video "Kozy Hasegawa On The Drums". He was also very active with his own bands, ExhiVision and Cube-Ray.

【Live Recording Accompanying Works】
Abingdon boys school, Kinniku Shōjo Tai, KOREKATA ROCK UNIT, THE ALFEE, T.M.Revolution, TOSHIMI session, TOSHIMI PROJECT, HAMMER’S WORKS, Mabumi Yamaguchi GROUP, etc.


susumu-k(Guitar & Chorus)

susumu-k debuted as a member of the band "stereo types". After the band took a hiatus, he started composing for other artists, and composing background music for TV commercials, DVDs, and doing live performances. susumu-k is currently one of the main composers for Battle Cry.

【Live Recording Accompanying Works】
Tomoe Shinohara, Starry sky, zutto, Mihoko Ishida, PrizmaX, Taka and Toshi, Nami Tamaki, Kana Nishino, Asuka Hayashi, Ai Haruna, Eiko Matsumoto, Yoiko, Robert, etc.




1993 yen(tax incl.)

  1. Road
  2. Doukoku
  3. Toki no Tobira
  4. Konomama Kimidake wo Ubaisaritai
  5. Surechigai no Junjo
  7. Shimauta
  8. Get Along Together ~Ai wo Okuritaikara~
  10. Natsunohi no 1993
Recording Musicians:

"Toki no Tobira" - Guitar : Hiroshi Shibasaki (abingdon boys school / ex WANDS)
"Konomama Kimidake wo Ubaisaritai" - Drums : Hideo Yamaki