String instrument tuning

Question

I've always wondered: Why are string instruments tuned in intervals of perfect fifths?

Violin: G3, D4, A4, E5

Viola: C3, G3, D4, A4

Cello: C2, G2, D3, A3

Stringed Bass: E1, A1, D2, G2

Answer 1

This is a great question!

Classical string instruments are typically tuned in 5ths because of something called Sympathetic Resonation, or Overtones. Basically when you play these instruments, the strings not currently being played are tuned to the most common notes that will reverberate and make the overall tone of the instrument sound warm and rich. There is a longer and more scientific answer but that's the gist of it :)

Also the string bass is actually tuned to perfect 4ths! Bass guitars are also tuned exactly the same.