Mary Lambert, the featured vocalist on Macklemore's gay marriage anthem Same Love, was prepared for someone to murder her over the hit song.

In Same Love – available on The Heist – Lambert sings the chorus, “And I can't change; even if I tried; even if I wanted to; my love she keeps me warm,” as Macklemore raps.

Lambert has described her recent track She Keeps Me Warm as “the other side of the Same Love story.”

(Related: Mary Lambert expands chorus on Macklemore's Same Love in She Keeps Me Warm.)

In an interview with The Daily Beast, Lambert said that she was prepared for hate mail – even murder – over the song's release.

“Even before, when we recorded the song, I was prepared for hate mail, I was prepared for someone to murder me!” Lambert said. “I'm a sensitive person, sensitive person. Overly sensitive. Extremely emotional. But before it happened, one of the producers said, 'Mary, you need to put your big girl panties on and get ready.' So I was prepared for negativity.”

“The fact that it took off, I was really shocked. There was so much positivity around it. That's something I didn't expect.”

(Related: Macklemore says gay rights are human rights in accepting VMA award.)