But one thing is undeniable: “Global Warming” is, for better or worse, the song that’s quickly putting Blübird on the map. While the two girls usually collaborate on both the lyrics and the music for their songs, Rose came up with the words to “Global Warming” on her own, with Alto contributing the drum parts later. Joseph Rose recalls how, shortly before writing “Global Warming” in 2005, his daughter had read an article about climate change in a magazine for kids at her school.

“I think the idea of global warming really scared her,” Joseph says, adding, “When I was growing up, during the Reagan years, I used to have nightmares of nuclear attacks. Now I think kids are having environmental devastation dreams instead.”

After waking up in a panic from one such nightmare, Rose spoke with her parents about her feelings: her fear about what could happen to the planet, and her anger and frustration that people weren’t doing enough to prevent it.
“A lot of those sentiments ended up almost verbatim in her song,” Joseph says.

For the time being, “Global Warming” is the only overtly political song in Blübird’s repertoire. Yet while Alto explains that she’s more interested in writing personal songs “about being a teenager and just trying to survive,” Rose says the controversy over “Global Warming” has only fueled her desire to send a message with her music.

“I think I’ve been more hurt by all the controversy than she has,” Joseph says of his daughter. “But I’m proud of her for taking a stand on something she believes in. She’s always had an activist spirit.”