The World is Invited to Join as the Extra Haim Sisters Bandmate.

"Any idea when you're chatting with Haim?" a message reads. "My request was to ask if I can be their newest bandmate."

However, there remains a single issue: The sender also longs to be Haim's additional sibling. And we're in plentiful company. Several high-profile admirers have publicly begged for the position.

It's clear an irresistible appeal is at play. Sisters Este, Danielle and Alana started their career performing shows at small eateries with their parents. Now they're repeated Grammy Award nominees.

Like all the most iconic groups, they're a close unit. Their videos repeatedly depict them marching in unison down the avenues of Los Angeles. On stage, they play with such unfettered exuberance you find yourself thinking, "I wish to be a piece of that, too."

"The amount of times on tour that young girls came up to us and said, 'Seeing you perform, I bought a guitar'," says Alana, the most junior of the trio. "That's the greatest honour. It is a prize in itself. Our mission is accomplished if we can motivate people to start a band."

"So all gets an invitation to be the fourth member of Haim."

Historic Nod

The band are speaking from a break, where they're recovering after an extensive tour in for their fourth album, I Quit.

They're right now processing the news it's been nominated for Best Rock Album at the Grammys – with Haim the pioneering all-female band ever in consideration for the trophy.

"I watch the lists every year, so it almost feels like an out-of-body experience when your name is called," notes Alana. "I had to call my sisters to say, 'Am I hearing this correctly or am I dreaming'?"

The significance of the honor resonates with the trio.

"We deliberately set out to make a rock record this time, so it's a major achievement," says Alana. "Yet we're just grateful for the women that came before us."

Heartbreak and Laughter

The album was born from a period of personal change. All three sisters ended up single, and the music explores that strange transitional period where you're relieved to be free, but not yet ready to move on.

The lyrics follow breakups and goodbyes. The sisters seek love, but not the kind of love they've experienced. You can hear them figuring out in the moment who they are becoming.

"I love way of putting it, yes," agrees Danielle. "I Quit is kind of like a mantra. You have to make an effort in ignoring the outside opinions and saying, 'I don't give what people think'."

Refinement of Sound

That developed resilience required a new sound – more organic and powerful than anything the band had done before.

For Danielle, who worked on producing the album, that started with the drum sound.

"The drum sound is such a detailed thing, and I care so much about it," she says.

"'Journey of the drum sound' will be the name of our biography," jokes Alana. "I always say, our albums cannot begin until we find the ideal drum sound."

Anecdotes and Shared Camaraderie

The band's candor fueled the album's promotional campaign, where the sisters disclosed some of their personal tales.

A former partner left Este over a health consideration. Alana recalled a story of flying to celebrate New Year's Eve with someone, only to receive a friendly slap at midnight.

"During these heartbreaks, you just feel like there's no hope," notes Alana. "Therefore to be able to laugh at those stories and hear others tell you even crazier stories, it's therapeutic."

A Confident Legacy

One can easily sense a shift in the band. Today, Haim are more assured of their place in the rock pantheon.

They're festival headliners, with chart-topping albums and an international following.

However the sister act will always be their number one commitment.

"My sisters and I have been playing music since I was a young child," shares Alana. "There is nothing else that we were meant to do. And I'm really thankful we've gotten here and we're still going strong."