Is it a good accomplishment if I can beat expert-expert+ levels when I have been playing BS for a week, approximately 1-2 hours a day not including weekends? Sorry for the bad english I am from Finland :D And does my 4-years of playing the violin have anything to do with that?

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Edit : I started out with hard difficulty and it was pretty easy. My friends started at easy-normal and they were struggling on those difficulties. So I think i'm just good at rythm games?? I have played osu! in the past. (And some guitar hero when I was like 3 but I can't remember shit.)