However, we can infer some possibilities based on his character:
* Greek mythology and classical music: Percy's life revolves around Greek mythology, so he might appreciate classical music related to ancient Greece. Think epic orchestral pieces or traditional Greek folk music.
* Rock music: Percy is a rebellious teenager who loves adventure and action. He might enjoy energetic rock music that reflects his adventurous spirit.
* Sea shanties: As a son of Poseidon, the god of the sea, he might enjoy traditional sea shanties, evoking the nautical themes of his heritage.
Ultimately, Percy's favorite music is up to your imagination. There is no definitive answer from the books!