SPECTRUM (ホーン・スペクトラム / Hōn Spectrum). Founded: 1979 in Japan.

Founders: Trumpeter/vocalist Ichiro Nitta (新田一郎) and trumpeter Junichi Kanezaki (兼崎順一) — both came from the professional horn section known as Horn Spectrum, which had worked as session players for pop and rock acts.

Many members were part of the backing band MMP (Music Mates Players) that supported the idol trio Candies before forming SPECTRUM.

Main lineup:

Ichiro Nitta – trumpet, vocals
Junichi Kanezaki – trumpet
Naoki Watanabe – bass, vocals
Shinji Nishi – guitar, vocals
Keiichi Oku – keyboards
Hiroo Okamoto – drums
Toshiyuki Yoshida – trombone
Takuro Konno – percussion (joined later)

Genre: Brass rock / funk rock / jazz rock / fusion.

Their final concert took place on September 22, 1981, at Nippon Budokan, after which the band officially disbanded.

Afterward, members continued successful careers as studio musicians, producers, and solo artists.