Remember that little kid's song about dinosaur extinction that went viral a few weeks ago?

Well, four-year-old Fenn just released a follow-up. This time it's a collaboration with both her father and her six-year-old sister, Bess. The title is "Virus in the Tree."

"My daughters made a virus related song today," 33-year-old London-based singer/songwriter Tom Rosenthal wrote on Twitter.

"It's written from the perspective of the virus. They're trying to process it all."

Tweet may have been deleted

"We, like everyone, are spending more time at home and so there’s more time to do songs now," Rosenthal told Mashable. "I asked what they wanted to write a song about and they said ‘the virus’!"

Rosenthal said it was his girls' decision to write from the perspective of the virus, too.

"I think kids love to play different characters, at least my girls do, so the idea of pretending to be a virus naturally appealed to them," he wrote.

"I think/hope it helped them as it’s important to be open and discuss these things. To pretend everything is normal is just impossible right now. Singing is always healthy, it’s a little escape and it’s nice that it cheers a few people.

"The girls know that now too and that gives them cheer also!"