a&r Jeremy Vuernick engineer David Schwerkolt engineer [mix engineer] John Hanes guitar Happy Perez keyboards Benny Blanco keyboards Cashmere Cat mixed by Serban Ghenea other Andrew Luftman other Ryan Del Vecchio other Sarah Shelton other Seif Hussain producer, programmed by Benny Blanco producer, programmed by Cashmere Cat producer, programmed by Happy Perez vocals Halsey written-by [author], composed by Abel Tesfaye written-by [author], composed by Ashley Frangipane written-by [author], composed by Benjamin Levin written-by [author], composed by Magnus August Høiberg written-by [author], composed by Nathan Perez Copyright (c) Astralwerks Phonographic Copyright (p) Astralwerks Published By 17 Black Music Published By Songs of Universal, Inc. Published By Infinite Stripes Published By Back Hair Music Publishing Published By Universal Music Publishing Published By Please Don't Forget To Pay Me Music Published By Polk St. Pub Published By Universal Music Corp. Published By Songs Music Publishing LLC Published By Songs Of SMP 17 Black Music / Songs of Universal, Inc. (BMI) - Infinite Stripes / Back Hair Music Publishing (BMI) / Administered by Universal Music Publishing (BMI) - Please Don't Forget To Pay Me Music (GMR) / Administered by Universal Music Publishing (GMR) - Polk St. Pub / Universal Music Corp. (BMI) - Songs Music Publishing, LLC o/b/o Songs of SMP (ASCAP)