As I said before, without more context, it's hard to determine who exactly Andy King is in the story. He could be just an ordinary person with an interesting life experience.
To start, maybe focus on the lyrics and the melody. They often give clues about the story's beginning. Also, think about what the song makes you feel and how that might relate to the start of the love story.
I recommend "Ode to Joy begins in the World of Chaotic Movies" to you. This novel is a light novel written by the sleeping Master Hulu. It mainly tells the story of Wang Yu being kidnapped by a system, transmigrating into the world of Ode to Joy, and then experiencing different things in it. Young ladies who like doujinshi can go and take a look. I hope you like this fairy's recommendation. Muah ~😗
One of Andy Liu's movies was Curse of the Dragon, which was released in 2002. It was directed by Director Li Rengang and starred Andy Liu, Zhou Yong, Zhang Jingchu, and others. The movie was an action movie about the ups and downs between good and evil.
I know nothing about this Andy Josiah without more context. He might be an ordinary person with an everyday story, or he could be someone with a remarkable tale in a particular area like sports, art, or business.
You could start by listening to the song multiple times to familiarize yourself with the melody and the overall feel. That often helps you catch the lyrics more easily.