Used for Biophilia "[o]n a few songs that needed extra sensitivity and detail," as stated by mix engineer Damian Taylor in this October 13, 2011 SonicScoop interview.

On a few songs that needed extra sensitivity and detail, Björk sang into Martin Kantola designed NU-47, a classic redesign of the Neumann / Telefunken U47 with striking wooden body. Otherwise the chain was simple: The Shure SM58 into a preamp with little or no compression.

“When I’m recording Björk, I try to compress as little as possible. Basically never. I do have a little something there on the chain just as a safety net, but basically I ride her performances the whole way in. Her dynamic range is just insane. Fortunately, I’ve gotten to know her pretty well, so I can start to feel when she’s about to take a breath and ride my output gain knob. This way, we’re not getting a squished sound going in, but we’re still getting consistent levels.”

(...) Originally, Taylor plugged the SM58 into a Neve 1084, with a Urei 1176 as his safety net. “That worked really well for Volta, where the voice had a more rock and roll sound.” But for this record, he realized the voice “would be a more delicate kind of thing”, and he came to prefer Björk’s Focusrite ISA 430 Producer Pack, while largely avoiding its built-in EQ and compression.

Producer Bruce Swedien confirms Björk's use of the NU-47 on this page of the microphone's official website.

Of course, it's a fantastic vocal microphone. There have been very few NU-47's made. One was made for Icelandic singer Björk, who absolutely loves the sound of this incredible new microphone. She told us that, "It captures both the small and the big sounds that I make!"

https://www.youtube.com/watch?v=iQvhjqbaT9E

http://www.nu47.com/NU-47C.pdf

When Jennifer Lopez decided to move on from Dancing (Janet Jackson) & Acting to become a World Famous SINGER she demanded the most sought after Engineer in the Business to Deliver her Sound: Maestro Bruce Swedien (Quincy Jones, Michael Jackson, Paul McCartney, Barbra Streisand, Nat King Cole, Count Bassie, Duke Ellington)

This is the Main Lead Vocal Mic used on all of Bruce Swedien's work with Jennifer Lopez

Bruce Swedien was Head Engineer on several of her Landmark Albums including: "This Is Me...Then" (Jenny from The Block etc) "Rebirth" "Como Ama una Mujer" her Spanish Language Album "Brave" (Bruce Swedien Mixing only)

The majority of This Is Me... Then was recorded over two weeks.[15] Lopez was drawn to the "contagious" melodies of Michael Jackson's album Off the Wall (1979), which led her to summon the record's mixer and engineer, Bruce Swedien, to work on This Is Me... Then. Lopez felt that Jackson's "clear and spacious" records made her feel a "certain way". She said, "It has such a beautiful quality on it, and every time I looked at a record [I liked], it would be engineered and mixed by Bruce Swedien. I was like, 'Who is this guy? I want this guy.' So I tracked him down and he was like, 'I want to do something with her. I know exactly what she needs. I'm coming in.' And it made a huge difference." - https://en.wikipedia.org/wiki/This_Is_Me..._Then

Made with Genuine Vintage Original Capsule, Tube & Transformer of the Vintage Neumann Telefunken U47 Wired and Hand-Tuned the Old Fashion way with a Touch of Martin Kantola's Secret MAGIC

Designed & Handcrafted in a Natural Wooden Body by: Martin Kantola - Technician & Designer to Bruce Swedien (Quincy Jones, Michael Jackson)

This was Bruce Swedien's Favorite Vocal Mic for Classic Vocals done in a Modern Setting out of ALL of his 100+ Microphones