“It’s a little crazy, all of this,” says the talk show host, as he discovers how the Happier Than Ever vocal came together.

However, it transpires that the concept of comping was completely alien to US talk show host David Letterman, so his mind was somewhat blown when it was explained and shown to him by production partners Billie Eilish and her brother Finneas.

Eilish is the first guest of the fourth season of the show, which is available to watch now.

To be fair to Letterman, he’s not the only one who’s been in the dark about comping, with Eilish admitting that “none of my friends know that [comping] is a part of making music.”.

Finneas then goes on to open up the Logic Pro project file for Happier Than Ever, the title track from Eilish’s 2021 album, explaining to Letterman that there were actually 87 vocal takes for the song. .

“This for me is like visiting my cardiologist,” says Letterman as he stares at the screen, before watching open-mouthed as Finneas plays the finished vocal and Eilish alerts him as each different take is introduced.

“To hear your voice in this context is a little bizarre,” says Letterman, “because I’m looking at things there [on the screen] representing, actually, the voice, I’m hearing the voice, which is ‘Oh my God’, and you’re just sitting right there.

In fact, Letterman seems so confounded by the whole experience that we wonder if he had to go and have a little lie down