United Kingdom, July 11 -- Benny Blanco has to use music discovery app Shazam to remember what songs he's made.

The 37-year-old producer "can't remember" many of the tracks he's recorded so he has turned to technology to help him appreciate his back catalogue.

Speaking on Therapuss, he said: "The first, like ,big pop thing that I ever worked on was Britney Spears. Sometimes I am in a restaurant and I'm like, 'Oh my god, this song's so good.' And I Shazam it, and then it's my own song.

"I'm old and I can't remember anything. And I've done like hundreds of songs that have come out."

Benny - who has worked with the likes of Kesha, Katy Perry, Ed Sheeran and Rihanna over the years - noted he had been "making songs for 16 years" and compar...