Rapper Kanye West has admitted that his headline performance at Glastonbury in 2015 put him in a “depressed state” that reminded him of being sacked.

West said it was a humbling experience when he forgot his lyrics and got the music wrong.

“It was incredible. I started off the show and I completely messed up the music.

It put me back in the position of when I was in high school and I got fired from my job

“It put me back in the position of when I was in high school and I got fired from my job, or when I played my music for R Kelly and he told me he was going to sign me, and then three months later, I still didn’t have any money. I could not afford a haircut, I could not take my girlfriend to the movies and I was still in my momma’s bedroom.

“I don’t usually get nervous, I prepare, I get fully prepared. When that music messed up in the beginning, it tapped into my nerves.”

West also outlined why he wants to run for US president, an ambition he announced on stage at the MTV Video Music Awards last year. He said: “We are numb, we’re numb to 500 kids getting killed in Chicago a year. We’re numb to the fact that it was seven police shootings in the beginning of July... we’re numb to places on the earth that we don’t live.

“When I talk about the idea of being president, I’m not saying I have any political views – I don’t have views on politics, I just have a view on humanity.”