Lady Gaga has revealed that she spent the first day working on her new record - which she wrote on a typewriter - in tears.
The emotional singer welled up - and couldn't stop - because producer Mark Ronson showed so much "love" during the recording process.
"The first day in the studio with Mark I cried almost the entire day. I was just so overwhelmed with excitement," she said.
Mark told Gaga to sit at the piano and sing what she wanted to sing about.
"It was just so overwhelming to have that love and experience I just cried all day long," the Poker Face star said.
Gaga said of the emotional impact of writing her own songs: "I have a therapist. When I leave the therapist's office I feel really, really great.
"When I'm writing music I don't always feel that way. It's a bit like open heart surgery."
Gaga said that she wrote lyrics for her new single, Perfect Illusion - created with Tame Impala's Kevin Parker and Mark - on a typewriter.
The star has previously posted images of the vintage Underwood portable typewriter online.
"We stripped everything away. I sat at the piano, Kevin was on guitar, Mark was on the bass," she said.
"We played through it, changed the melody, shifted it.
"I work on a typewriter and we would bounce new lyrics back and forth."