The first section of the attached Music sheet for Bayan Ko is labeled A.
The second section is labeled B.
Yes, there is a difference in the melody of Section A and B.
The musical form of the song Bayan Ko is such that it has 82 beats per minute. It comprises two major forms A and B. Where A is the major section.
What is Musical Form?
This is used to describe the various sections of music as portrayed on a music sheet. It may be labeled using large letters.
What is Bayan Ko?
This anthem is one of the most patriotic songs of the Philippines, often referred to as the second national anthem of the Philippines unofficially.
See the link below for more about music sheets:
https://brainly.com/question/9285795