Koolism started out in 1992 when Elleson joined a group by the name Tribe Ledda L, which comprised Hau and his cousins Hounga and Sione. By 1995 only DJ Danielsan and Hau remained and they changed the name to Koolism, from a song with that name which they recorded the previous year. Their first appearance using that name is on the Homebrews Volume 1 compilation. Their first official release, Bedroom Shit came out in 1996 on cassette and was passed around the country from one person to the next – the inspiration for the track "Tapes" on their 2006 album, New Old Ground. The tape caught the attention of Blaze and Dr Phibes, who offered to put out their next release on vinyl on their recently formed 'Parallax View' label and in 1998 Lift Ya Game was released. This was followed two years later by the Blue Notes EP and in 2002 they released The Season EP. These last 2 were part of a 4-part series of EPs forming a collage when put together – unfortunately the last two in this series, Butcher Shop and The Epic have never been released as most of the material was stolen during a car break-in while touring in 2004. 2002 saw the duo release the highly anticipated Part 1, their first album on CD, which contained fresh tracks alongside those previously only released on vinyl. This CD release allowed Koolism to expand on their loyal and hugely supportive underground following to cater to a wider, ever-growing fan base. Koolism's commercial existence has also been enhanced by Australia's leading music program, rage, airing the film clip to "The Season", the title track to their 2002 EP. 2002 also saw Koolism nominated in two categories at that year's Australian Dance Music Awards. In 2003 the group toured the county relentlessly scoring high praise for their live show. 'These lads have a strong reputation for putting on great live gigs.' JUICE Koolism again received nominations at the 2003 Australian Dance Music Awards, this time in three categories. They also managed to find time during their touring schedule to record their third albumPart 3 - Random Thoughts. The album features guest appearances by Rodney P, Nfamas, and Mnemonic Ascent and was released in early 2004. In 2004 Koolism won an ARIA Award for 'Best Urban Release', for their album out on Invada Records, Part 3 - Random Thoughts. The pair subsequently leaving Canberra with Hau moving north to Sydney and Danielsan heading to Melbourne. In February 2006 Koolism released their third album, New Old Ground on Invada records. Koolism were one of the Australian hip hop artists featured in the documentary Words from the City, which aired on ABC Television in late 2007. In 2008, Koolism signed to Mushroom Records. On 14 April 2008 Hau took over from Maya Jupiter as the host of Triple J's weekly Hip Hop Show.
