Python said:These all're stringed instruments, and do you agree with Edgecrusher77, who said: "For me, without doubt, the strings instruments : From violin to guitar (bass also) and also the piano.
Soul and emotions got vibrations like strings, it s the perfect kind of instrment to express your feeling..."?
Those three I mentioned as my own favourites; I consider them being closest to human nature and nature around us in usual, like nordic folkmusic that speaks to nordic mind direct and openly.. It's not just the strings but also all the other instruments that are older and even archaic, original instruments for each culture, 'root instruments' so to say, 'instruments of nature (and even mind)'..
EDIT: Btw, apologies for my possibly terrible english, I'm more into nordic languages..