Can resonance occur at multiple frequencies for the same given instrument? For example, in a violin, each note on a given string (say A) resonates and is the loudest only at a specific point on the string. Since each note on the same string can resonate, and each note has a different frequency, does that mean that resonance is occurring at many different frequencies ? If not, shouldn't just one note be loud and clear on the instrument...? Basically, I understand that resonance has a role to play in how stringed instruments work, I just can't understand how.