The following is quoted from JACK DUPON's official website by kind permission with minor alterations.

There's no need to search for JACK DUPON in the civil registration, because this legendary character doesn't exist! We're talking of a young French band here, made of four crazy people, phlegmatic adventurers of the Imaginary. Improvisers and storytellers. Polite and rude. Full of oppositions, contradictions. In one word: Alive. Their music is like their existences: out of styles and boundaries. Far away from the usual technical show-offery, their performances tell the story of the crazy JACK DUPON: Manitou and Mentor, Big Brother, a genius criminal of a thousand masks..
Published on the Gazul label in the year 2008, "L'Echelle Du Desir" explores the vast landscapes of Progressive rock, experimental and psychedelic music. Sometimes reminiscent of a kind of modern ETRON FOU LELOUBLAN, this music may also be related with SEBKHA-CHOTT's, or KING CRIMSON's electric dissonances. GONG also comes in mind, especially when having a look at the booklet, probably designed by some kind of flying teapot!
JACK DUPON is all but consensual, for our own pleasure...
Jack Dupon is a progressive rock band consisting of two guitars, drums, bass, percussion and singing.
The music is almost impossible to describe, but Jack Dupon performs a delirious music, full of humour and rhythm, dynamic, giving free way to the imagination....
Jack Dupon is primarily a live band communicating a lot through music, but also by their personal universe which really comes through at performances. This adds a higher human dimension, which is mostly felt by the public. An opportunity then appears: let experimental music emerge from the shadows, in order to discover a new landscape remaining accessible to everyone. And this perhaps corresponds to an expectation, even a desire to offer an alternative to formatted music.
The creation of pieces is made in a scientific-empirical manner: Compositions take shape from topics brought by the one or the other, or of complete improvisations recorded and revised in the studio. Songs are often long and explored, their structures are progressive and living as the bed of a river. All of this is performed with amazing precision.
Painted with conformable, tense, brutal or violent atmospheres that can stretch or stand out, the compositions decompose themselves and are reborn in a bouncing movement.
The instrumental instants are punctuated with vocal interventions. Singing is then considered to be a rhythmic or lyrical element; singing exists as the fifth instrument. Vocals are sometimes distant, sometimes audible, and resemble the bubbles of a comic strip. In the purest oratory respect of oral transmission of tales and legends, the group gradually includes voice and singing in the compositions.

Influences: Zappa, Phish, Morphine, King Crimson, Caravan, Primus, Frog Brigade....