Pop star Kesha spent one high school summer enrolled in a religious studies course at New York's prestigious Columbia University, all in the name of fun.

The TiK ToK hitmaker was so fascinated by religion, she travelled from her family home in Nashville, Tennessee to the Big Apple so she could learn all about the different beliefs and practices across the world at one of America's top schools.

She explains, "I started coming to New York when I was 16. People don't know this about me and I think it's an odd fact - I used to come here and study at Columbia University when I was in high school, Comparative Religion, for fun, in the summer.

"I thought it was really fun. I've kind of always been fascinated by religion and leaders of religion and leaders of cults...

"Then I dropped out (of school) and got my Ged (high school diploma) and look at me now!"