I think the answer is principles of design.
I don’t know what that says
<span>William Caxton was an English merchant, diplomat, writer, and printer. He is known to be the first English person to work as a printer and the first to introduce a printing press into England, which he did in 1476.
Hope this helps:)</span>
Answer:
G G A A B-flat F D D C C B-flat F F B-flat F B-flat F F F F F B-flat