Few acts on this side of the Atlantic seem to demonstrate the huge step-change in the appreciation of jazz as Yussef Kamaal.

The sprawling multitude of styles under the jazz umbrella has always oscillated between cool and uncool, and this London-based outfit show a definitive break from Fast Show 'niiice' naffness into a young, self-confident groove.

They might balk at being defined too narrowly as a jazz act, their roots a medley of magpie tastes. But their self-taught label is no indicator of ameteurishness - this is a serious virtuoso group.

Forcing the charge are old brederen Yuseff and Kamaal whose drums and keys merge tempos at will and paint mystical colour ala greats like Thelonious Monk. They're joined by a fusion free wheeling seven string guitar, aggressive jabbing bass and a trumpeter from Cuba.

In their set and debut album, recently released on Gilles Peterson's Brownswood record label, you can hear the inflections of London's underground, in the dub, breakbeat and jungle they grew up with and jam to.

But in the round it feels much more otherworldly, a proud successor to the cosmic wonderings of John Coltrane and Pharaoh Sanders. The demographic of the young band leaders and audience tell its own story, and shows how this movement, bolstered by the success of the new wave American jazzers like Kamasi Washington, is determining its own destiny.

An extraordinary act who may will define the jazz landscape for a whole new generation.