"I'm not quite sure what to expect but I have a lot of friends who have been there and they always tell me there's nothing like New Zealand rock fans, so I'm excited!"
They'll be playing songs from across their back catalogue, including last year's release Into The Wild Places, which saw them change approach, change studio, change city, change producer and end up recording in a converted church.
"You'd walk in to this huge congregation room with big tall windows and lots of sunlight, and it didn't really feel like you were in a studio. So even that aspect of recording in the church, I feel added to the mood of experimentation.
"This entire new record is a series of what we've been calling happy accidents. We screwed up every single song on this record but in the best way. I guess we were looking to capture that human element, making moments and playing off each other, and not really knowing what we were doing, and figuring it out as we went, and recording all of it, rather than chasing after perfection."
Halestorm have been a classic rock act right from the get-go - Lzzy and Arejay's father was a bass player in local bands during the 70s and 80s, and there was always plenty of classic rock records on the stereo when they were kids.
"Through my mid-teenage years I was obsessed with Black Sabbath and Van Halen and Cinderella and Led Zeppelin and Thin Lizzy and Pink Floyd and AC/DC. My interest in heavy music was always through classic rock; I loved those sounds. And somehow it all just became part of my identity, down to the way I dress and how I view myself, and my music has always been rooted in that classic rock tradition."
She's well aware she's in the minority as a woman leading a rock act, but it's never been an issue.
"If there's ever been any negativity, I think I've always been a bit blind to it. I guess I do music for quite selfish reasons - not to make anybody like me, really, just because it was something I could do pretty well that I enjoyed.
"Occasionally when you have to clarify, 'Oh yeah, I'm actually in the band, I'm not just dating someone in the band or a groupie', that's when you notice it. But I think regardless of your gender, you just have to work very hard to make sure that you're good at what you do. If you can knock it out of the park every night then no one cares what you're wearing, or if you're a guy or a girl."
Music profile
• Who: Halestorm
• Where and when: Performing at the Powerstation tomorrow
• Listen to: Into The Wild Life (2014), The Strange Case Of ... (2012), Halestorm (2009)