"When are you speaking to the band?" a message pops up. "I was hoping to ask if I can join as their extra sister."
However, there remains a single issue: The author likewise wants to be Haim's additional sibling. Furthermore, we are in plentiful company. Several high-profile fans have openly petitioned for the honor.
The evidence suggests something is at play. Sisters Este, Danielle and Alana began their career playing gigs at small eateries with their family. Now they're multiple Grammy Award contenders.
In the tradition of the best groups, they're a close unit. Their music videos repeatedly show them striding in sync down the avenues of Los Angeles. On stage, they jam with such unfettered joy you can't help but think, "I'd love to be a piece of that, too."
"The numerous instances on tour that fans approached us and said, 'After your show, I got a guitar'," says Alana, the most junior of the trio. "That is the greatest compliment. It is a prize in itself. We've done our job if we can encourage people to make music."
"So all are welcome to be the fourth member of Haim."
The band have called into home, where they're recovering after an extensive tour in support of their latest album, I Quit.
They're currently processing the news it's been shortlisted for best rock album at the Grammys – with Haim the first all-female band ever in the running for the trophy.
"I watch the lists every year, so it sort of feels like The Truman Show when your name is called," says Alana. "I immediately called my sisters to say, 'Did I hear this right or am I dreaming'?"
The weight of the nomination is deeply felt by the band.
"We deliberately set out to make a guitar-driven album this time, so it's a significant milestone," continues Alana. "But we're just thankful for the female artists that inspired us."
The project came out of a period of emotional upheaval. All three sisters ended up single, and the music inhabits that strange transitional period where you're relieved to be free, but not quite ready to start anew.
The words detail departures and goodbyes. The sisters seek love, but not the kind of love they've had. You can hear them figuring out in the moment who they aspire to be.
"That's a perfect summary, yes," agrees Danielle. "I Quit is essentially a personal statement. You have to actively work on blocking the criticism and saying, 'I couldn't care less what people think'."
That newfound confidence required a different sonic direction – more unpolished and immediate than any of the music the band had done before.
For Danielle, who worked on producing the album, that began with the percussion.
"Drums are such a nuanced thing, and I am so passionate about it," she states.
"'Journey of the drum sound' will be the title of our memoir," laughs Alana. "Our motto is, our albums cannot begin until we find the perfect drum sound."
The trio's honesty shaped the album's marketing, where the sisters revealed some of their personal tales.
One man broke up with Este over a medical consideration. Alana shared a story of flying to spend New Year's Eve with someone, only to receive a high five at midnight.
"When you're going through these heartbreaks, you just feel like there's no hope," explains Alana. "Thus to be able to laugh at those stories and hear others tell you even crazier stories, it's therapeutic."
One can easily sense a change in the band. These days, Haim are more certain of their place in the music world.
They're major draws, with hit albums and an global audience.
However Haim will consistently be their number one priority.
"My sisters and I have been playing music since I was a young child," shares Alana. "It's like nothing else that we were meant to do. And I'm really fortunate we've reached this point and we're still kicking."