Credited to Noah Gundersen & the Forrest Rangers, "Day is Gone" was written by Seattle-based singer-songwriter, Noah Gundersen, Sons of Anarchy's
creator, Kurt Sutter, and the show's music supervisor, Bob Thiele Jr.
In our interview with Gundersen
, he talked about his experience co-writing the tune: the three wrote it remotely and sent ideas back-and-forth to each other. Gunderson had never written with others, so this experience got him out of his comfort zone and helped him grow as a writer.
"I knew it was being written for the show, but I had no idea what the context of the song was going to be in it," Gundersen said. "So I had to rely on the broader sense of what I knew about the show, which was that it was dark, it was violent, and it usually involved some kind of tragedy between characters. I just took that and ran with it, which thankfully is similar to a lot of the themes in my own music, so it wasn't too much of a stretch."
The song ultimately played during a vital moment near the end of the Season 6 finale, "A Mother's Work."