"Lionsong" is the second song by Icelandic singer and musician Björk from her eighth studio album, Vulnicura. It was written and composed by Björk and features beats by Venezuelan musician Arca, who co-produced the track with her.

"Lionsong" was released as a promotional single to radio stations in some territories, including the US, by One Little Indian Records in late 2015 and received limited airplay in a shortened radio version.Vulnicura saw no official commercial singles, digital or physical, the first for a Björk studio album, though several versions of "Lionsong" exist due to the various supplementary projects that accompanied the original Vulnicura album.

In late 2013, a 14-second video clip appeared on Instagram showing a close up of a computer monitor with software running and recording a melody for strings. The video teased it was new music from Björk, but after 2011's innovative and experimental Biophilia many doubted the lush string arrangement came from Björk. The video was in fact a snippet of the melody of "Lionsong". The video was apparently recorded in the Nordic House in Reykjavík, Iceland and uploaded by a sound engineer but was quickly taken down. It can, however, still be found on other video sharing sites such as YouTube.

"Lionsong" was written 5 months before Björk's breakup with American contemporary artist and filmmaker Matthew Barney, and the breakup fueled most of the material on Vulnicura. In "Lionsong", Björk describes being stuck in an uncertain place in their relationship. "Maybe he will come out of this loving me / maybe he won't," she sings, before coming to the conclusion, "Somehow I'm not too bothered / either way." She demands clarity while her partner seemingly wants things foggy and unresolved.

Björk recalled the genesis of the song to Rolling Stone Magazine, which occurred shortly after recovering from vocal chord surgery in 2013: "I couldn't speak for three weeks… But the album was a new beginning. The chorus in "Lionsong" – I was in this forest outside Reykjavík, warming up, opening my throat like a bird. It was cathartic."

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Wikipedia