The five-time Grammy winner brings her Firefly Summer Festivals Tour to Cardiff Castle on Tuesday 29th June 2027, with British R&B favourites Eternal joining her as special guests.
The last time many South Wales fans saw Mariah Carey in Cardiff, she made her entrance on a chaise longue carried by six dancers. More than a decade on, the Welsh capital is giving her a castle. On Tuesday 29th June 2027, Mariah will headline DEPOT Live at Cardiff Castle, one of just four UK dates announced for her Firefly Summer Festivals Tour. With Eternal also on the bill, it’s a summer night worth circling in the diary if your old CD collection runs heavy on ’90s R&B.

The night Mariah played Cardiff
Mariah brought her Sweet Sweet Fantasy Tour to the then-Motorpoint Arena on 21 March 2016. In a five-star review for South Wales arts magazine Buzz, Rebecca Mansfield Fellowes recalled the elaborate entrance, the sequins and an audience singing along. Mariah dedicated Always Be My Baby to her children, whose photographs appeared on the screens, and the show moved between the bounce of Fantasy and the big ballad moments of Hero and One Sweet Day. There was even an on-screen appearance by Whitney Houston for their duet.
The Castle gives this visit a different feel. You can walk in from Castle Street with the city still going about its business outside, then spend the evening on the green inside the walls. An open-air crowd singing Hero back to Mariah as the light fades is easy to picture. The Cardiff setlist is still to come, though there’s plenty to choose from.
Three decades of songs to choose from
Put on Vision of Love, Mariah’s 1990 debut single, and you can hear why generations of singers have tried to follow her lead. She can stretch a single syllable across a run of notes, then land on the next line as if she’d barely taken a breath. Her five-octave range gets the headlines, but listen to We Belong Together and the small decisions are just as striking. She keeps the early lines close and conversational, so the final chorus feels like everything she’s been holding back.
British listeners have their own landmarks. Without You gave her a first UK number one in 1994, and her version of Phil Collins’ Against All Odds with Westlife put her back at the top in 2000. Those records sit comfortably alongside the lighter Dreamlover and the groove of Fantasy. Put them on in succession and you can hear why two people who grew up with Mariah might choose completely different favourites.
Eternal bring a catalogue of their own. From Stay to Just a Step from Heaven and the UK number one I Wanna Be the Only One, their close harmonies were all over British radio in the ’90s. If you’re going with friends who remember those songs the first time round, get there in time for the support.

Ten things you might not know about Mariah Carey
- She helped write 18 of her 19 US number ones. The Songwriters Hall of Fame credits her as a writer or co-writer on all but one of her Billboard Hot 100 chart-toppers.
- She was 17 when she wrote her first hit. Vision of Love became her debut single and first US number one.
- Her debut album produced four US number ones. They were Vision of Love, Love Takes Time, Someday and I Don’t Wanna Cry.
- A Boyz II Men duet held a chart record for more than two decades. One Sweet Day set the US record for weeks at number one, which stood until Lil Nas X’s Old Town Road overtook it in 2019.
- East 17 beat her to Christmas number one. Stay Another Day took the UK Christmas crown in 1994. All I Want for Christmas Is You finally reached number one in December 2020.
- Her Christmas hit is preserved by the Library of Congress. The US institution added the recording to its National Recording Registry in 2023.
- She secretly made a grunge record. A version of Someone’s Ugly Daughter appeared under the name Chick in 1995, with Carey on backing vocals.
- She won a breakthrough acting award for Precious. The Palm Springs International Film Festival recognised her performance in Lee Daniels’ drama.
- She has an Ivor Novello Award. She received the PRS for Music Special International Award in recognition of her songwriting.
- There’s a Camp Mariah. She helped establish it with the Fresh Air Fund to give young people a chance to explore different careers.

Mariah Carey at Cardiff Castle tickets
MARIAH CAREY gets to Cardiff Castle on Tuesday 29 June 2027, with special guests Eternal. Ticketmaster lists the event from 5pm. General sale opens at 9am on Friday 13 November 2026, with presale options earlier in the week. Under-18s must be accompanied by an adult. TICKETS HERE.

