In 1986, Tanaka kenrou (Guitar) and Sato Katsu (Drums) -both formerly played in the legendary underground band, LIBIDO- got together again and formed a new band, aiming for some different style of music than LIBIDO. First members are a female vocal, two guitars, bass, and drums. They played in some mixture style of jazz rock and progressive rock, with this twin-guitar featured band. On March next year, they played in the first live gig at La.mama, Tokyo.

In 1988, They turned into vital action, played in 9 live gigs at SILVER ELEPHANT, CROCODILE, and more clubs, took part in an omnibus album "Canterbury Edge" from MADE IN JAPAN RECORDS label. A guitarist left the band shortly after. Their sound came less jazzy, and more progressive, vocal and guitar-oriented pops style. The next year, they played only one　stage. On February, vocalist has left, and the first period of the band has ended.

Remaining members kept their activity in rehearsal studios. But the bassist has also quitted in 1990, Tanaka and Sato started to looking for new members.- They played twice on stage as interpose with guest players at this time.Tanaka found Koike Toshiyuki (Bass) and a keyboardist, searching for a new drummer on a rock magazine, made a contact with them and join together. The second period has started with this union. In 1991, members were fixed with a newly joined female vocalist. The sound of this period was changing into symphonic with keyboard sound.

First live of this period was on March 1992, at SILVER ELEPHANT. But this period suddenly ended after the gig on October same year, at La.mama. They played only four times on stage at this second period. After that, interpose stopped their activity for long. Each member went ondifferent ways individually.

In 2001, Tanaka and Koike went to see the gig stage of Satoh. They met together and reunited, the third period of interpose has started. Same year, Yonekura Ryuji (Keyboards), who has played with Tanaka at the tribute band for YES, joined the band. Aruga Sayuri (Vocal) joined in 2003, and third period members were fixed with new name, interpose+.Their style came to a mixture of voice and various sounds from each instrument. First live of this period was also at SILVER ELEPHANT, January 2004,and three more stages they played in the year.

From February to May 2005, they recorded original songs for their first album CD. Yonekura Ryuji left the band after recording.
And Watanabe Nobuo joined as a new keyboardist in July.
Finally, the first album "interpose+" has been released from POSEIDON/MUSEA Label in November.
Shortly after, Koike Toshiyuki has quitted in December, and now Dani from KBB plays bass guitar as a guest player.

From November 2006 to February 2007, they recorded the second album "INDIFFERENT", and released in June. Shortly afterwards, the guitarist, TANAKA kenrou quitted, and IIJIMA Jouji joined the band.

On May 2008, the band took part in Prog'Sud 2008, the international progressive rock festival that takes place at Marseille, France every year. Afterwards, their first Live DVD "LIVE 2008" - available only in Japan so far - was released on June.