What is percy jackson and the singer of apollo?

Percy Jackson is a fictional character in a series of young adult novels written by Rick Riordan. The series is titled "Percy Jackson and the Olympians" and follows Percy, a demigod (half-human, half-Greek god), as he goes on various adventures and battles mythological creatures. The novels are based on Greek mythology and have been adapted into a film franchise.

"The Singer of Apollo" is a novella written by Rick Riordan that is set in the same universe as Percy Jackson. It follows the story of a young man named Hal, who is a troubadour and singer for the Greek god Apollo. The story takes place in Ancient Greece and involves Hal going on a journey to reunite Apollo with his lost instrument. The novella was published in 2013 as part of a collection called "Guys Read: Other Worlds."