Abigail, what was it about “Bridgerton” that made you want to turn it into a musical?BARLOW The opening scene is so theatrical. I could just see each part of the stage lighting up in my brain. And then I kept writing down lines of dialogue that sounded like song titles. The phrase “ocean away” was the first one that made me run to my piano.

The original videos remain on TikTok, and the independently produced album is on Spotify, Apple Music and other streaming services, but the musical has yet to actually be staged. (This is far from the norm for the musical theater album category, which has typically gone to big-name Broadway musicals such as “Hamilton,” “Jersey Boys” and “The Lion... See more

On Sunday, with about six years of musical-theater writing experience between the two of them, the Gen Z songwriting duo beat out a list of powerhouse Grammy nominees that included Andrew Lloyd Webber’s “Cinderella”; Conor McPherson’s “Girl From the North Country,” built around Bob Dylan songs; and a Stephen Schwartz musical.

Speaking on a video call from their hotel rooms in Las Vegas, where the Grammys were held, Barlow, now 23, and Bear, 20, discussed their album’s unanticipated success, their practice of collaborating creatively with fans and where their careers are headed (starting with a Broadway-bound musical that they can’t yet discuss). Here are edited excerpts... See more

Bear produced and orchestrated the album herself, using her computer and an electronic keyboard to create the sound of a full symphony orchestra.

Last year, Barlow had watched the first season of Netflix’s saucy period drama about the elite marriage market of Regency England, along with millions of others searching for escapist entertainment during the pandemic. A 22-year-old aspiring pop singer with a sizable TikTok following, she posted a song that she wrote with a simple but, she thought,... See more

Where were you each at before this came into your lives?BARLOW We were both really depressed. It is hard to break into the music industry, and I was ready to give up. I was applying for record-label receptionist jobs and crying to my parents because they had been helping to support me in Los Angeles and they were like, “You need to get a real job.... See more

Do you think you’ll continue that way of doing things now that you have this institutional approval?BARLOW We’d love to, but we have some exciting projects after “Bridgerton” gave us a foot in the door and we still have to keep it hush-hush.BEAR Which is totally against our M.O., and it’s a little frustrating because, as we’re writing this music,... See more

As the spark of an idea started to build, she sought help from a collaborator, Emily Bear, a 19-year-old composer and musician who had been introduced to the world as a 6-year-old piano prodigy but was hoping to prove herself as more than just a former spectacle for daytime talk shows.