As Louis Armstrong sang, “My only sin … is in my skin.

I write for my life Louis Armstrong wrote “my only sin is my skin.

She continues, “You are my sunshine, my only sunshine.

On the back she wrote “You are my sunshine, my only sunshine.

22 – ‘My Only Wish (This Year)’, by Britney Spears

My Only Wish (This Year) as sung by Britney Spears

The song “You are my sunshine, my only sunshine...” became a leitmotif in the film.

Penny Dreadful, Season 2, Episode 9: And Hell Itself My Only Foe

Simon Pegg and J.K. Simmons sign up for heist comedy ‘My Only Sunshine

Penny Dreadful: Season 2, Episode 9 And Hell Itself My Only Foe

Penny Dreadful Season 2 Episode: 9 - And Hell Itself My Only Foe

This is entirely related to the Christmas song by Britney Spears, My Only Wish this year.

...whispered from a watery grave 'you are our only hope'...

But Britney Spears' calls it “My Only Wish This Year.

This is the end, my only friend, the end…” (The Doors).