Björk’s "Medúlla", released on August 30, 2004, represents a bold and experimental departure from her previous work. Following the lush, electronic textures of Vespertine (2001), Björk sought to create an album that was almost entirely vocal-based, showcasing a raw and innovative use of human voices. The title, derived from the Latin word for "marrow," underscores the album's intention to explore the fundamental and primal aspects of music through the human voice.
The album received widespread critical acclaim for its originality and inventive approach, although it was also seen as challenging and abstract by some. While it didn’t achieve the same commercial success as Björk’s earlier albums, Medúlla resonated in certain markets, topping charts in France, Iceland, and Wallonia, and reaching the top ten in the UK. It has sold over a million copies worldwide and earned Björk two Grammy nominations at the 47th Annual Grammy Awards.
Medúlla featured two main singles: "Who Is It" and "Triumph of a Heart." Both singles performed well in the UK and Spain, reaching the top 40 and top 10, respectively. Björk also promoted the album through performances, including her notable rendition of "Oceania" at the 2004 Summer Olympics opening ceremony and appearances on various television and radio programs.
A unique aspect of Medúlla's promotion was Björk’s decision not to tour for the album, as she felt the live performances of the complex vocal arrangements would be too challenging. Instead, the album was later adapted into an opera in 2015 by Sjaron Minailo and Anat Spiegel at the Brussels opera house La Monnaie, showcasing its continued influence and versatility.
Overall, Medúlla is remembered as a daring and innovative project that pushed the boundaries of vocal music and remains a significant part of Björk’s diverse discography.