Russly is a traditional local singer. He travels to Korea with a group of performers. He performs the song and unknown to him someone records his singing on a traditional song call "Seri Mersing". Assuming that "Seri Mersing" was a very old song and available to all public. The recording is later combined and enhanced with a twentieth century music beat and choreographed with new dance, and later it was released by a famous group called "Bee Tee Es". The song called "Bitter" sells millions of copies and is used in advertisements for an online shopping platform in Korea.

(a) Does the traditional song from Russly qualifies for originality requirement? Justify your answer.

(b) Does Bee Tee Es have a copyright in "Bitter"? Justify your answer.