current_members website years_active label background genre article_title name
simon tomlins mc antsman mc mana darren mathiassen stephen gallagher rycroft thomas boyce koa williams raashi malik lisa -lsb- http://www.rhombus.co.nz www.rhombus.co.nz -rsb- 2001 - present fmr , vitamin group_or_band reggae , dub , roots reggae rhombus -lrb- band -rrb-
 rhombus
rhombus -lrb- band -rrb-

rhombus are a dub/drum n bass/reggae/roots band from wellington , new zealand .
they were formed in 2001 by thomas voyce and simon rycroft , later joined by ahmen mahal aka imon star -lrb- who departed from the group in 2007 to pursue his solo project ` olmecha supreme ' -rrb- and koa williams -lrb- roots foundation sound system founding member -rrb- .
the band has toured extensively in their native new zealand along with a few international dates , notably in japan -lrb- 2002 -rrb- and in australia , playing twice at the sydney opera house in november 2004 .
over the years they have performed with such acts as st germain -lrb- france -rrb- , fat freddy 's drop -lrb- nz -rrb- , salmonella dub -lrb- nz -rrb- , michael franti -lrb- usa -rrb- , dry & heavy -lrb- japan -rrb- , trinity roots -lrb- nz -rrb- , gomez -lrb- uk -rrb- kora -lrb- nz -rrb- , shapeshifter -lrb- nz -rrb- , katchafire -lrb- nz -rrb- and also performed at the big day out -lrb- nz -rrb- 2006 .
the band have also given their time to a number of causes including greenpeace , tsunami relief , surfaid international , the cancer society , and the peace boat .
their travels on the japanese-based global ngo peace boat have taken them through the caribbean -lrb- including jamaica , home of studio one , king tubby and many other influential dub and reggae artists -rrb- , with the intent of `` spreading the values of sustainability , co-operation and peace through music workshops from a chartered ship . ''
in 2003 they won three awards at the bnet nz music awards for `` best video '' , `` best electronic release '' and `` best album '' .
their 2003 album `` bass player '' was their most successful with regard to chart position , peaking at # 18 in the new zealand top 40 albums charts .
