I wanna say the note would be E but idk
i am thinking that he has the card needed sorry if it isnt hepfull
Answer:
Hi! Your answer will be (D. Have a nice day, and hope this helps!
The answer is : staff lines. He devised an arrangement of lines and spaces that developed into the musical staff. Two of Guido D'Arezzo's primary contributions to music history
: 1. developed a 4-line staff circa. 1025
2. wrote a text on music ca. 1026 called "Micrologus"
