Answer:
Our own assumptions of artifacts, based on what we already know
Explanation: for guitar those are cords at the top per cord you have a music note so depending on the cord is a note so remeber at the complete bottom line its E then goes to g b d f then on the open spaces you have d f a c e g
A. Recording sounds of lions in Africa
B. Spinning dance tunes as a DJ
I think sorry if wrong
Op art