Claudiu,
I am listening to the songs right now: I don't think that you will ever be able to play this kind of music with a VA76 or another arranger keyboard, for that matter. This music requires a lot of sequencing and also a few synthesizers, maybe even old analogic ones.
(Now, please, don't start asking me what "sequencing" does mean...)
Frankly, I think that you are on the wrong Forum, and also that -before asking all the questions you ask- should do a little more "homework": study music, play songs, study how things like sequencers work, etc
There is no substitute for (hard) work... sorry!
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Korg Kronos 61 and PA3X-Pro76, Roland G-70, BK7-m and Integra 7, Casio PX-5S, Fender Stratocaster with Fralin pickups, Fender Stratocaster with Kinman pickups, vintage Gibson SG standard.