"I don't think it makes a good play, but it's a remarkable one," Sean O'Casey famously remarked of The Silver Tassie, his late-1920s drama about the depredations of war, and how simultaneously right and wrong he was. To be sure, his four-act play set before, during, and after the ravages of World War One isn't "good" if one is referring to something theatrically tidy and manicured and all of a piece.

“You’re great listeners. You have surrendered your ears.” The reverent hush that descended for two hours on the Festival Hall is a new sort of sound at a Christy Moore concert. There was a time when such a gathering would bristle with fervour. Twenty years ago, if not of Irish descent, you could feel distinctly like the odd one out. Things have changed, for any number of factors: the peace dividend in Ulster, the ever-diluting Celtic DNA of the Irish diaspora, while the senior sections of Moore’s audience – and pensioners abounded last night – have grown older and less raucous with him.

The ease with which Wallis Bird can flit between genres armed with nothing but a guitar and her warm, raggedly bluesy voice has been apparent since at the very least her 2012 self-titled third album. Even still, those of us who fell for that album’s considerable charms could hardly have expected its architect to celebrate a move to Berlin by going full-on Eurodisco.

"I first tasted semen when I was seven-years-old." Those are the first words spoken in Calvary, the superb second film from writer-director John Michael McDonagh. They're delivered by an unseen confessor addressing Father James Lavelle (Brendan Gleeson). The priest's response: "It's certainly a startling opening line." Well, quite. Evidently fucking with us from the off, Calvary wants to shock and is inclined to nod and wink at its own machinations.

In Irish mythology, a stray sod is an enchanted piece of grass that, if stepped on, leaves a person feeling disorientated and lost, even in familiar surroundings. Although there's no reference to this in Tommy Tiernan's new show, Stray Sod, there's plenty of self-knowing stage Irishness – even, briefly, Oirishness – as he delivers a riveting 80 minutes of comedy that's a sort of state-of-the-nation address about his home country.

The transfer this week to the West End of The Weir has reminded theatre-goers of Conor McPherson’s hypnotic powers as a dramatist. In the Donmar's revival of the play you can palpably feel the playwright’s storytelling magic casting its spell all over again as, on a windy evening in a rural Irish pub, character after character unburdens himself - and finally herself - of a supernatural tale.

Musically, lyrically, dramatically, on every count this debut album from The Gloaming is exceptional. Four-fifths of the group - Clare fiddle player Martin Hayes, Chicago guitarist Dennis Cahill, the Cúil Aodha sean nós singer Iarla Ó Lionaird and Dublin-born hardanger player Caoimhín Ó Raghallaigh - are all well-known figures within traditional Irish music. It's The Gloaming's fifth member, New York-based pianist (and album producer) Thomas Bartlett, whose harmonic, rhythmic and textural effects serve to paint this music on a wider, more expansive canvas.

Raw fear is horror’s ideal state. The vertiginous drop through a trapdoor into primordial, gasping helplessness usually only lasts for the split-second length of a cinema-seat jolt. Jeremy Lovering’s debut aims to scare us for much longer. Unusually, he wanted to scare his actors too, feeding them just enough script to get by as they filmed on Cornwall’s Bodmin Moor (standing in for rural Ireland) at night, and he threw shocks at them out of the dark. Fear is his theme and method.

At the Wexford Opera Festival this autumn you could see a bicentenary performance of Verdi’s La traviata. Likewise Donizetti’s L’elisir d’amore. But that’s not why Ireland’s operatic showpiece is one of the most famous, admired and respected events on the European opera calendar (to prove it, Opera Europe, the forum for all companies across the continent, held one of its annual conferences in Wexford this autumn).