Katy Perry has revealed that there have been periods during her career where she has been left feeling humiliated by the music industry.

The singer has found immense commercial success which has continued through to her latest album Prism but she revealed in an interview with a German magazine that this hasn't always been so.

“You have to eat dust in the music industry. You'll get humiliated, often in very uncomfortable ways. That period of my life was like a test of my strength," she said.

Perry’s personal life has been no easier than her career in recent years having had to deal with a divorce largely down to such a difficult work schedule.

"My philosophy is: you get presented with these challenges so you can learn to overcome them," she said, "When I was married I kept taking breaks in between touring so I could dedicate time to my marriage."