This is soft question.I am not expert in music. We know that English language has 26 letters (which are again grouped into vowels and consonants) , while language of music is same all over the world and it has only 7 letters (all are vowels). There are number of musical instruments. one can blindly recognize which instrument is being played just by listening to it.
Each musical instrument sounds (i am not finding proper word here in case of "sounds" ) different than any other musical instrument.Every instrument seems to be unique while listening.My basic question is why is it so?
Also,is it possible to replace one musical instrument by combining two or more other instruments playing together or like that ? (For example is it possible to obtain same Guitar sound (i.e.sound/tones our ear listen while Guitar is being played) by combination of other musical instruments say violin and harmonium etc played together ?)