[1][2][3] Inscore began his career as a touring musician with Jem (singer), Beck, Charlotte Gainsbourg, Thurston Moore, and Twin Shadow.
[1][2][3][4] As a session musician, he played the electric bass on Beck's 2014 album Morning Phase, on Gainsbourg's IRM, and on a number of other projects.
"[5] Besides Sivan, Inscore co-wrote songs for Allie X, Ben Platt, Chloe & Halle, Claud, Duncan Laurence, Hayley Kiyoko, Mayer Hawthorne, Niki, Rina Sawayama,[1][2][3][4] and The Veronicas.
He was also active in K-pop circles in South Korea, writing Louder Than Bombs for BTS with Sivan and Sia,[6] as well as other songs for NCT 127, SuperM.
[4] A year later, he was a co-writer of Andy Grammer's Don't Give Up on Me, the theme song of the 2019 movie Five Feet Apart.