Roots of I Knew You Were Trouble

Anton Zaslavski, known professionally as Zedd, is a German record producer and DJ. His stage name was derived from zed, the English pronunciation for the first letter of his surname. Raised in Kaiserslautern, Zedd rose to mainstream success with his 2012 single "Clarity", which peaked at number eight on the Billboard Hot 100 and won Best Dance Recording at the 56th Grammy Awards. It served as the third single for his debut studio album of the same name (2012), of which its deluxe edition spawned the US top 20 single "Stay the Night".

Adam Richard Wiles, known professionally as Calvin Harris, is a Scottish DJ, record producer, singer and songwriter. His debut studio album, I Created Disco (2007) was preceded by the singles "Acceptable in the 80s" and "The Girls", both of which achieved commercial success in Europe and Australia. His second album, Ready for the Weekend (2009), debuted atop the official album charts in the United Kingdom, and its lead single, "I'm Not Alone", became his first song to reach number one in the UK Singles Charts. In his early tracks, Harris mostly sang in his songs.