Casey live at the underworld with Mirror Talk and Lastelle – 26th March 2026

There are some nights at The Underworld where the room feels chaotic before the first band even walks out. This wasn’t really one of those. The atmosphere on 26 March felt more focused than frantic. People were packed in early, but there was a different kind of energy in the room. Less about blowing off steam, more about being there for something that meant a lot.

With support from Mirror Talk and Lastelle, the night built slowly but properly, before Casey brought everything to a close with a set that felt as personal as it did powerful.

MIRROR TALK

Opening the evening were Mirror Talk, and they made a strong first impression. Their sound leans into modern post-hardcore and alternative metal, with enough melody running through it to stop it feeling one-note. There’s a clean emotional thread to what they do, but they still know how to bring weight when they need to.

Their setlist, which included “Disgrace,” “Circle the Drain,” “Decay” and “Clarity,” moved at a good pace and never really dragged. They kept things simple, which worked in their favour. No over-talking, no trying too hard to force a reaction. They just got on with it, and the crowd gradually came with them.

For an opening slot in a venue like The Underworld, they handled themselves well. The room was still settling in, but by the time they closed with “Things I Don’t Feel,” people were properly paying attention.

You can follow Mirror Talk here:

LASTELLE

By the time Lastelle came on, the room had filled out properly, and the energy noticeably lifted. Formed in Oxfordshire in 2018, Lastelle have been steadily building a strong reputation within the UK post-hardcore scene, helped along by BBC Radio 1 airplay, millions of streams, support slots with bands like Holding Absence, Caskets and As Everything Unfolds, and more recently a growing wave of praise around their Exist releases. They’re one of those bands that feel like they’ve earned every bit of momentum they’ve picked up.

Their sound sits somewhere between post-hardcore, post-rock and modern alternative metal, but what makes them stand out is the emotional weight in it. There’s atmosphere there, but there’s also urgency. Songs like “Life in Silhouettes,” “Tired Eyes,” “Bitter Roots” and “The Silence Hurts the Most” carried that balance well, sounding huge in a room that doesn’t leave much space to hide.

Adam especially brought a lot to the set physically. He got into the crowd more than once, throwing himself right into the middle of it rather than keeping that usual frontman distance. It felt natural, not staged. Later in the set, he followed it up with a stage dive that got one of the biggest reactions of the night up to that point. It all added to the sense that Lastelle weren’t there to just warm the room up. They wanted to leave a mark, and they did.

You can follow Lastelle here:

CASEY

Then came Casey, and from the moment they stepped on stage, the room shifted again.

Casey have always existed in a slightly different space to a lot of bands around them. Formed in South Wales, they first made their name in the mid-2010s through emotionally bruising records that sat somewhere between post-hardcore, melodic hardcore, and something more vulnerable and stripped back. They built a loyal following on honesty rather than hype, and even after their split, their music clearly never stopped, meaning something to people. Their eventual return and the release of How to Disappear gave that connection new life rather than just revisiting the past.

They opened with “Unique Lights”, and it immediately felt right. No dramatic intro, no overblown build. Just straight into it. “Puncture Wounds To Heaven” followed early, and it landed hard, with the whole front half of the room already shouting every word back. That was the thing all night really. Casey didn’t need to ask much of the crowd because the crowd was already there with them.

A lot of bands write emotional songs. Casey have always felt different because their songs don’t really soften what they’re trying to say. Tracks like “I Was Happy When You Died,” “Great Grief,” and “Fluorescents” still hit with that same blunt honesty they always have, and hearing them in a room this size somehow made them feel even heavier.

There was movement in the crowd, but it wasn’t one of those nights where everyone was trying to outdo each other in the pit. The energy came from people being locked into the songs. You could feel that especially during “Happy,” “Haze” and “Phosphenes,” where the whole room felt fully tuned in rather than distracted.

“Bruise” and “For Katie” brought things into a more delicate space without losing any of that intensity. That’s something Casey do really well live. They can pull the room right down without losing it. No one drifts. No one checks out. People stay with them.

By the time they reached “How To Disappear,” “Teeth” and “Hell,” the emotional weight of the set had really settled in. It didn’t feel dramatic in a performative way. It just felt real. There’s a kind of stillness that happens at certain shows when people are fully present, and this had a lot of that.

Closing with “Little Bird” felt fitting. It gave the set a proper ending without trying to force some huge final moment. It just landed where it needed to. No big production, no gimmicks, no trying to turn intimacy into spectacle. It was just a band playing songs that clearly still mean a lot to them, in front of a crowd that clearly needed them too.
And in a venue like The Underworld, that was more than enough.