Hello Ilija,
looking at your post I would suggest you go for an oriental keyboard.
Yamaha-Roland-Gem-Solton they all have oriental versions, which will provide you with the styles you need.
Also I see them offered regular in small adds thru VIA,VIA (as you are dutch you must know that magazine.)
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Keyboards/Sound Units: Kurzweil 2600S, Roland VR-760, Acces Virus C, Roland G-800, Akai AX60, Minimoog, Machine Drum, Roland R8-M, mediastation x-76