This was produced and co-written by Max Martin and his regular collaborator Shellback. Adele had never heard of Martin before hooking up with the Swedish hitmaker.
It was "Remedy
" co-writer Ryan Tedder who told the English songstress about one of the leading songwriters of the 2010s. The pair were having lunch and Taylor Swift's "I Knew You Were Trouble
" came on the radio. Adele recalled to i-D
: "I was like, 'I love this song, who did this?' and he's like 'Max,' and I'm like, 'Oo's Max?' and he's like 'Max Martin!' and I'm like, 'Oo's Max Martin?'"
So Tedder sent Adele a YouTube clip of Martin's work.