Watch: NANCY WILSON Joins ANN WILSON On Stage In Santa Rosa For HEART Classic 'Barracuda'

Nancy Wilson made a surprise appearance during Ann Wilson's concert last night (Tuesday, October 10) in Santa Rosa, California.

Nancy joined her sister and her backing band TRIPSITTER on stage at the Luther Burbank Center For The Arts in Nancy's hometown to perform the HEART classic "Barracuda".

Prior to launching into the final song of Ann's set, she told the crowd: "Ladies and gentlemen, we have the answer to a question with us tonight. A very, very good friend — more than a friend… Let's bring her out. Come on."

This past June, Nancy revealed in an interview with Joe Rock of Long Island, New York's rock station 102.3 WBAB that she was working on fresh music with her sister and fellow HEART member Ann. The 69-year-old musician, who has spent sone of the recent months on tour with her new band NANCY WILSON'S HEART, broke the news of her latest collaboration with Ann while discussing some of her current recording projects, including "Tomboy", which involves covering songs written by her male friends.

"I think right now I've been working on 'Tomboy' the most because I love the title, for one thing; it's almost like 'boy genius' or something," she explained. "But I've got a bunch of new ideas for songs. But I've also been writing new music with Ann too. So it's a real creative time. I think being on the tour right now, when I get home, I'm gonna really dig into the other projects, including finishing some new material with Ann. So it's really a good time to be creative. And I've got a new studio in my house, and so I can't wait to sort of run tape on stuff."

Asked if there is anything that she feels is really exciting because she feels it's something that's so different from what she's done before, Nancy said: "Yeah. Some of the stuff I've been working on with Ann is like that. I've also worked a bit with Sue Ennis, who used to work a lot with me and Ann for HEART music. And so I have some lyrics mainly that I worked on with Sue and took to Ann. And there's a couple of things that I'm really excited about. Very cool. Like stuff that you wouldn't have heard us do in the '80s. [It's] closer to what you would have heard us originally do in the '70s, late '70s. So it's really fun. It's just exciting and inspiring."

Nancy went on to say that she is really pleased to be collaborating on new material with her sister. "It's been a really nice kind of rediscovery of our relationship, working on music together again," she said. "So, yeah, I'm really happy about that."

In July 2022, Ann told Grammy.com that she and her sister had plans for the band to celebrate its 50th anniversary in 2023. "Yes, we do," she said. "I'm not at liberty to say exactly what they are yet because it's such early days, but sure. It will be next year. And we're doing a thing. Definitely. We're still formulating it now."

Ann's comments came three months after she denied rumors of a rift with Nancy. In an interview in the 300th issue of Classic Rock, Ann said that she was "not" feuding with her younger sister. "It's a myth," she insisted. "Nancy and I are okay with each other. We just have different ideas for what HEART should be, and we haven’t figured out a compromise yet.

"Fifty years on, I still want it to break barriers and rules, and she's more satisfied to ride the L.A. imaging thing and just do legacy stuff," Ann explained. "So that's a real split between us. Things like this will happen, though, but then they'll get better, and we'll love each other more."

Relations between the two sisters were considered to be at an all-time low after a much-publicized incident when Ann's husband was arrested during a HEART tour in 2016. But in a recent interview with Rock Candy magazine to coincide with the release of her new solo album, "Fierce Bliss", Ann said: "Things happen in families. And that was a really good example of something that happened within a family, and we worked it out. But the part that made it hard was that it happened in the public eye. If it had happened privately, we'd have got the family in a room and sat down and worked it out between us. Instead, the police were called, and this myth was born that Nancy and I were feuding, and we were at each other's throats all the time. And it's really not like that at all."

A proposed HEART tour fell through last year after the two sisters failed to agree on which backing band to use. Ann wanted her guys, Nancy didn't. But Ann later said that another HEART album, which would be the band's first since 2016's "Beautiful Broken", was a definite possibility, especially considering the fact that 2023 marks HEART's 50th anniversary.

"It depends on the songs," she said in her Rock Candy interview. "The songs lead everything. And I'm writing songs again now. I don't know if they'll be for my solo thing or for HEART. But yes, I would like to make another HEART album."

Ann previously said that HEART would celebrate its 50th anniversary in 2023 "because next year's the 50-year [anniversary] of when we actually got together and got going," she told Liz Barnes of Planet Rock's "My Planet Rocks". "Nancy didn't join until '75, but the band got going in '73. So, yeah, we have a bunch of stuff planned for next year. So I can definitely see HEART doing something."

In February 2022, Nancy spoke to Joe Rock about why HEART had been inactive for most of the previous three years.

"HEART had a big offer on the table [in 2021] for a bigger tour, but Ann wasn't interested in going out with my lineup of guys that we were out with before," she said. "She has a new lineup of guys that she wanted me to join up with. And I sort of [thought] I don't really know them and don't have loyalty yet for anybody like that."

HEART toured North America in the summer of 2019 after the aforementioned nasty split that kept the Wilson sisters estranged for three years.

Ann and Nancy had a falling out during HEART's 2016 tour, when Ann's husband Dean Welter was arrested for assaulting Nancy's then-16-year-old twin sons in a backstage altercation at a gig near their hometown of Seattle. He pleaded guilty to two lesser assault charges to avoid jail time.

After completing HEART's 2016 tour, Nancy formed a new band called ROADCASE ROYALE and released an album, "First Things First". ROADCASE ROYALE featured three members of HEART along with Liv Warfield from Prince's NEW POWER GENERATION band and her guitarist Ryan Wilson.

In Nancy's new band NANCY WILSON'S HEART, she is joined in the group by her longtime collaborators, guitarist Ryan Waters, drummer Ben Smith, bassist Andy Stoller and keyboardist Dan Walker, along with powerhouse singer Kimberly Nichole.