'Love to Love You Baby'- Donna Summer

The disco icon revealed that she used her boyfriend as inspiration for her moans of pleasure during the recording of the 17-minute album version of the song.

She said: “Everyone's asking: 'Were you alone in the studio?' Yes, I was alone in the studio. ‘Did you touch yourself?' Yes, well, actually I had my hand on my knee. 'Did you fantasize on anything?' Yes, on my handsome boyfriend Peter."