Dermot Mulroney and wife Prima talk singing on “We Are Family”, Dylan McDermott, and making classic rom-coms

The couple also pitches a "My Best Friend's Wedding" sequel and "We Are Family" All Stars Tour to EW.

All season long, Fox's We Are Family has showcased non-famous relatives of celebrities performing amazing solo performances and duets with their hidden famous family member in front of an audience tasked with guessing their identity for money. But Wednesday's two-hour finale featured a new twist — the first married couple.

After a rousing solo performance of "Will You Still Love Me Tomorrow" by The Shirelles, singer-songwriter Prima Apollinaare was joined by her "relative" for a duet of "Islands in the Stream" by Dolly Parton and Kenny Rogers. After Dylan McDermott and My Best Friend's Wedding clues galore, Prima's singing partner stepped on stage and was revealed to be her husband, actor Dermot Mulroney.

Entertainment Weekly caught up with the longtime "stealth Hollywood couple" to discuss the show, grade their performances, dish on whether or not they can watch rom-coms, and yes, the Dylan McDermott of it all.

ENTERTAINMENT WEEKLY: What was your reaction to getting the call to do We Are Family and were you both on board or did one of you have to convince the other?

DERMOT MULRONEY: It was such an amazing phone call to get that the show reached out to us. They knew Prima's music and put together that we are this sort of secret couple even though we've been together for 20 years. Kind of a stealth Hollywood couple. So it really works perfectly for this show. And then it was such an honor to be on a game show that helps other people and isn't just fun and games, although we could not have had more fun.

PRIMA APOLLINAARE: What I liked about the show is that people that actually need money were able to win money. Like I said to him, there's first responders, people like nurses, firefighters, and also people who just really need extra money, so why not? It's fun. We both like to do karaoke together and we both like music so much. It was actually, for me, it was really an amazing experience to be on television and singing. Of course with my husband, I play with him all the time in the house. We all play instruments. We have harps, guitars, ukulele, pianos, you name it. So we're all musicians, but to actually do it and just have people winning money is also very rewarding. I've been singing since I was very little and music is my heart. So it was a great experience. They made it so easy for us. We had so much fun. I wish we could do it again.

On the show, Dermot got to give his glowing review of your performance, but Prima, I'm going to put you on the spot — how did Dermot do?

APOLLINAARE: Dermot is an amazing singer. He just finished a musical Mack and Mabel where he played Mack.

MULRONEY: Well, we've both been singers our whole life and although I've been obviously an actor and a musician in other ways in that I've played cello and scoring orchestras, Prima pretty much said it — we're just a really musical family and have that in common. But I'm not really known for my singing, so thanks for bringing that up. Mack and Mabel was one of the biggest challenges in my career. I just finished that, but hopefully we'll be able to play that again.

APOLLINAARE: Take it to Broadway.

MULRONEY: Hey, Broadway is a good idea. Thanks for bringing that up. So [We Are Family] was kind of my face reveal for on-camera singing on television, that's for sure. Obviously I've carried a tune in a movie or two. Some have become iconic even over the years, but the whole nature of this is different where it's with an audience and yet there's cameras hovering all around you. And it was so gracefully hosted by Joel McHale.

APOLLINAARE: I had fun singing with him.

MULRONEY: It is great to come out and then turn to your own spouse and sing right into their face. That was unusual. I have to say, really, really fun.

APOLLINAARE: I didn't mind. It was fun. The show is extremely well done. Everybody's there to help you, to tell you where to stand, to tell you when to come in. It was such an easy peasy experience for me. I've never done anything like that and it was so friendly.

MULRONEY: So I'm going to pitch a We Are Family All Stars Tour now that everybody knows the other person's spouse or son or nanny or whoever else is pursuing this. Let's take this thing on the road.

On We Are Family, there was a Dylan McDermott clue. Does the "is it Dylan McDermott or Dermot Mulroney" thing ever get old?

MULRONEY: No. I would say about 25 years ago it was old, I think for about a minute. And then it goes in cycles. It is an inter, multigenerational... It's like it was a mental meme for people before they even had them. It was viral before there was such a thing and a lot of things they didn't survive, they didn't stay funny when people started meme-ing and going viral. But this one has. It's remarkable.

APOLLINAARE: We're friends with Dylan. We love him. I love him.

MULRONEY: And now especially just he'll find something funny and text me. Or I'll text him something. I do love him. We are blessed to have him on a parallel universe track in my entire life. And I would argue now that together, we have a larger footprint than we would've had as individuals. We're better for each other than we thought in the first place. It's been amazing and it's only getting richer as again, younger kids think it's funny too, and it's happening all over again. So stay tuned. There's more humor to come, and joy to be wrung out of this bizarre non-identity crisis.

Another one of the clues was about My Best Friend's Wedding. I heard that you got to see it for the first time since 1997 thanks to a little screening your Anyone But You costar Sydney Sweeney set up?

MULRONEY: It was an incredibly touching screening. So yes, I saw it recently projected on the screen with incredible sound and an overall great film-watching experience, which was really touching for me of course. So many wonderful memories, and thanks again when EW did that reunion —

APOLLINAARE: We want My Best Friend's Wedding 2 now!

MULRONEY: Yeah, there's a good idea for sure. So it was an amazing film to watch and to aspire to when we were making Anyone But You. Everybody really brought their biggest heart to that movie and nobody phoned it in, because everybody was dedicated to making a great long-lasting rom-com, starting with the great script and director. And that's why it worked, because nobody there was just half there, everybody gave it their all and in this case so much emotion and love and when you see that on screen, it's irresistible. That thing has been in the movie theaters for 12 weeks and it's still ranking. It's surpassed numbers we never dreamt of and it's proof that if you make a good one, people will come to the theater and they'll keep coming. Now, just last week they opened it on VOD, and it was No. 1 out of the gate for that first week and continuing in the top 10. So I'm so proud of being part of all these movies that you ask about, My Best Friend's Wedding, too, but the fact that these two kind of have that symbiotic overlap is just an incredible full circle moment for me as you can imagine. I'm so thrilled for everybody involved in Anyone But You because of how much everybody brought to those roles.

Does the fact that you've done so many classic rom-coms make it harder to watch them or enjoy them for either of you?

APOLLINAARE: No, no, no. I watch all of his movies. To be honest with you, I think the only movie I did not see of his is Scream VI, not because I don't care for it, it's just I don't care for the genre. But I always think his movies are excellent. I really like it. No, I watch romantic comedies by myself even without my husband. Actually, I just finished a show and it's so good, so good. I've never been so much taken into a show like this. This one really did it for me. It's called One Day on Netflix.

MULRONEY: Unlike Prima, I've done tons of interviews, so I'm going to steer it back to her. Speaking of not missing something, her third album, 22, comes out this May 7. Is that the right date?

APOLLINAARE: My fourth album. [Laughs]

MULRONEY: Her fourth album. [Laughs] And, like Fox did, once you discover Prima's talent on all of the platforms, anywhere you find music, but also YouTube of course, you'll see what kind of an amazing library she has, all written and performed and produced by herself. And so I urge anyone to go seek her music. It's really phenomenal. She's a lifetime musician, but it's amazing to watch Prima's self-generated creativity come to fruition. It's really incredible, especially the way they put us together here on Fox. We're so touched, honestly, it means so much to us as a couple. It really was a great bonding experience.

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