the vocalist says something like "r21, dub phixiz" or "war 21, dub phizix" so i bet thats the name of the vocalist. Was dropped a few times at exit records bday. Dbridge played it so possibly exit records? complete speculation of course. and i just remembered that kasra played it aswell so that doesnt work.
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just found the vocalists. They are a jamaican collective called Ward 21 -
http://en.wikipedia.org/wiki/Ward_21
So basically this tune is now
Dub Phizix feat. Ward 21 - ???????