[2] Kush were formed with Jeff Duff on vocals, John Santos (aka Montesante) and Colin Chapman on trumpet, Ron Anderson on piano and saxophone, Stephen Ball on keyboards, Tom Cowburn on guitar, harmonica and backing vocals, John Ellis on clarinet, flute and saxophone, Rob Matthews on bass guitar, and Graham McDonald on drums.

They released covers of "Peter Gunn", "MacArthur Park" and "Walk on the Wild Side", as well as originals such as "(Livin' on) Easy Street".

[citation needed] Duff relocated to London in 1978 as "the waif-like androgynous oddball Duffo"[3] His keyboard player and arranger for most of this period was Sev Lewkowicz.

[3] His 1999 compilation, Martian Girls Are Easy, is a 40-track, double CD anthology covering Duff's solo career from 1978, described by music historian, Ian McFarlane as showing "the satirical, new wave origins of 'Give Me Back Me Brain', through the soulful classical arrangement of Lou Reed's 'Walk on the Wild Side', dipping into funk on the way and then back to his glam roots"[3] Jeff Duff appears as 'Secta' in the Australian science fiction movie, Sons of Steel, released in 1989, featuring Duff's single, "Here Come the Freaks".

He juxtaposes his twenty-piece big band swing repertoire with the raunchy glam rock of his Alien Sex Gods shows.