Dubstepforum.com

After hours of searching I cant seem to find what this instrument is, and if a synth how i can go about making it.
We all know the song Ganja dub by Sukh Knight. I dont know if I'm just a loser and i should know this, or if its some sort of synth or what.
Its in most dub and reggae music, though it is in some dubstep, and I want to use that kind of sound for one o my dubstep songs, which is why I came here. Cant put my finger on what its called. In some Bob Marley songs it sounds more like a string instrument but this is more of a wind.

Its that "dun...dun...dun...dun..." in the background.
I think I'm just an idiot for not knowing q:

HAM VST

Well I'm a reason user, but I'm sure I can just record something in fl and export as .wav. What exactly is this vst?

Sorry for the double post, but that didn't really help. D:

Hard to tell. From that song specifically, it either sounds like a cheap casio type organ sound, or it could be a melodica/sample of a melodica played pretty high...

Hmmmmm I'll try that, thanks so much!