Justin Tranter and Julia Michaels are a relatively new songwriting duo and they've had some hits recently with Justin Beiber's "Sorry" and Selena Gomez's "Good For You". They've also written Gwen Stefani's "Used To Love You" and Hailee Steinfeld's "Love Myself"
We"ll see if they make the final cut, but for now Christina was interested enough in their songwriting to pick two of their songs to possibly be on the album
op songwriting sessions can often be like blind dates, with an array of writers and producers shoved into a room with minimal direction. Ms. Michaels and Mr. Tranter, who are both represented by the music publisher Warner/Chappell, met at one such setup in late 2013, though Ms. Michaels?s shyness almost doomed the collaboration.
?When you?re in the room with somebody you don?t know, and you have to be practically naked, it can be really overwhelming,? she said.
So Ms. Michaels hid in a hall closet while the producer played a beat on loop and Mr. Tranter stood by skeptically. She was ?so nervous and insecure,? Mr. Tranter recalled, until suddenly ?she kicks open the door and sings this insane melody with my song title plugged into it. I honestly knew at that moment: ?Oh, this is over? ? in a good way.?
Rita Ora and the mega-D.J. Calvin Harris recorded that first song soon after; Christina Aguilera and Kelly Clarkson picked two others from their first batch of five. ?That ratio is insane,? Mr. Tranter said.
http://www.nytimes.com/2016/01/10/arts/music/how-an-unlikely-duo-became-the-hottest-songwriters-in-pop-music.html?_r=0