With the track's steady banjo and acoustic guitar providing the soundtrack to lyrics comparing a new love to country music's most famous marriage, the video portrayed an innocent-looking Forsyth dressed in a long white vintage dress.

The music and the aesthetic were very much folk or alternative country.

However, it's fair to say the Kurri Kurri singer-songwriter has undergone both a musical and personal transformation since her 2015 EP Blackbird and debut album Dawn Of The Dark in 2018.

The explosive first single Be Here dropped in 2019 and provided a glimpse of Forsyth's grungy reinvention.

Since then the '90s alt-rock influences have continued with the subsequent singles Down Below, Falling Down, Courtney Love, All For You and Nothing At All.

At The Gum Ball last month there was no sign of a banjo or a dainty country dress. Forsyth, wearing a cut-off Nine Inch Nails t-shirt and pinkish hair, delivered a roaring rock performance reminiscent of PJ Harvey or Chrissy Amphlett. It was more Seattle than Tamworth.

On Friday the sonic shift is crystallised with the release of Forsyth's second album Provlépseis, meaning "predictions" in Greek.

"When that [Be Here] came out, that's when my nerves were pretty there," Forsyth says from the Queensland Sunshine Coast, where she moved in 2020.

"With the rest of the record, they're songs that still feel very in line with Dawn Of The Dark for me.

"Obviously when we were in the studio we were very careful to go along the same lines, but stay true to where I'm at with my music at the moment, my sound and what I'm listening to.

"For me, I've always been listening to a lot of different stuff. Alt-country was where I sat because I've never particularly fitted into a genre. Even my last record, it was hard to know where it fit.

"With me stepping further out it's daunting, it's not scary for me. At the same time I feel these feelings are quite familiar to me anyway. I need to make sure I'm staying true to where I'm at."

A major turning point both personally and musically was Forsyth's battle with endometriosis, a disorder in which tissue that normally lines the uterus grows outside the reproductive organ.

The pain became so debilitating for Forsyth she struggled to perform and write music. After Hunter country musician Lyn Bowtell gave her a recommendation for a Sydney specialist, Forsyth underwent surgery in 2018.

During the recovery she listened obsessively to Nirvana, Hole and Audioslave to teach herself bar chords. Not surprisingly the caustic sounds of grunge and its darker lyrics flowed into Forsyth's songwriting.

"Obviously when you're in physical pain it affects your mental health," she says. "Writing these songs and coming out the other side with a couple of them, I was in a fairly dark place and dark headspace, which is why I was getting angry abut things I have no right to be angry about.

"It's funny to look back now with a couple of those songs when I did have endo.

"It's interesting how dark you can get, and think that's f--ked, but you also smile because you're past it and so beyond it that you can move past it.

"Definitely the endo did create a cloud over my head for some time and it took me time to figure how I was going to do my job whilst being in pain because it didn't feel like it was going away."

Forsyth's uncomfortable relationship with social media was also a defining influence on Provlépseis, particularly on the tracks Cosmetic Cuts, Keeper and the darkly intense single Courtney Love where she delivers the bitter hook of "she's got no substance."

In the past she's used her Instagram to promote the #fkthefilterchallenge and #boycottthefilter campaigns, which urge people to present an honest reflection of themselves in selfies rather than submitting to societal expectations of beauty.

"It's something I've been open about," she says. "I find it really difficult to find the balance of showing up as myself, and also not giving enough away that people will use it against me, which is the really bizarre place we're in at the moment.

"I feel there's this policing that's going on on social media, which is strange. It's very happening and very popular to do.

"I'm the anti-rock star. I really don't like the rock star thing, it doesn't work for me.

"I'm not a rock star. That energy that the term 'rock star' comes along with the persona. I'm just not that."

However, what Forsyth can state with conviction is Provlépseis is where she's at as a songwriter, whether or not her old alternative-country fans come along for the journey.

"It's still Tori and it doesn't feel like we've jumped completely off the ship, we've just steered it in a different direction," she says.

Tori Forsyth's album Provlépseis is released on Friday.