Venezuelan producer Alejandro Ghersi, (aka Arca) produced six of Vulnicura's
nine tracks. Björk approached Arca after his manager sent her Arca's mixtape &&&&&
. She told Pitchfork
: "Alejandro knew all of my albums from his childhood - apparently, I'm big in Venezuela. [laughs] He knew my songs better than me. I would say, 'Oh, can you make that third beat like…' And he'd say, 'Oh, you mean like the third break of song five of album two?' He was like a library of my music."
"At first, I was really defensive; I'm not good with people who are fans," Bjork continued. "But it just wasn't that energy at all. It was a really healthy energy, like a student. Suddenly, I got to be a strange kind of teacher. I would literally sit next to him and, for the first few songs, the heartbreak songs, I would be the backseat driver. I would describe all the beats, and then he would do them and add stuff. We did it together. I've never done that before. So I just sat next to him for weeks, and we did the whole album. It's the quickest I've ever worked. He's so incredibly talented and so eager to learn."
"It's one of those crazy things in life where people from opposite ends meet, and you've got so much to teach each other," she added. "It's really equal, what you've got to give to each other. [tears up] It's been a strange album - the most painful one I've done, but also the most magic one."