1. The problem statement, all variables and given/known data 1. Two identical guitars are played by two persons to give notes of the same pitch. Will they differ in quality? Give a reason. 2. How do you account for the fact that 2 string instruments can be used to give notes of the same pitch and loudness but different quality? 3. The attempt at a solution I thin the answer for both questions is that they have different subsidiary notes with varying amplitudes. They have different wave forms. Isnt it?