Heart-shaped box is a song originally written and performed by Kurt Cobain of Nirvana. A live performance of this song was done by Lana in Australia. Unfortunately no decent recordings seem to exist.
Lana has previously expressed a great fondness for the band. Courtney Love tweeted Lana shortly after the performance;
“@LanaDelRey you do know the song is about my vagina right? Throw down your umbilical noose so I can climb right back.”
“@LanaDelRey on top of which some of the lyrics about my vagina I contributed.
“So umm next time you sing it, think about my vagina will you? Lol.”