Dónal Lunny's career is a lesson in what it means to be the person in the room nobody can quite explain. He wasn't the singer, wasn't usually the soloist, wasn't the one whose name went on the marquee first. He was the arranger, the producer, the percussive engine — the person whose absence would have made Planxty, the Bothy Band, and Moving Hearts into smaller things. Christy Moore said Planxty would not have succeeded without 'the genius and creativity of Dónal.' That's the tribute you give when someone's contribution is systemic rather than decorative. The bouzouki story is where you start, because it's the one structural intervention that outlasted all the bands. Andy Irvine brought a Greek round-backed bouzouki home from European travels in 1970. Lunny took it, flattened the back, shortened the neck, and made something new — the Irish bouzouki, now a standard instrument in the tradition. That move — take something foreign, modify it for what the music actually needs, give it away to the whole tradition — is a precise metaphor for everything Lunny did as an arranger and producer. Planxty, formed in 1972 from the Prosperous album sessions with Moore, Irvine, and Liam O'Flynn, advanced the Chieftains' model of ensemble instrumental playing but added something the Chieftains didn't have: songs, rhythmic urgency, and Lunny's harmonic instincts. The Clancy Brothers had guitar and banjo and singalong. The Chieftains had refined instrumental chamber music. Planxty had both, plus a rhythmic engine that sounded like something that had always existed in the tradition and somehow hadn't. The first two albums arrived in 1973. The audience knew immediately. The Bothy Band (1975–1979) pushed harder. Tríona Ní Dhomhnaill's clavinet brought an electric keyboard into trad sessions before anyone had decided that was allowed. Paddy Keenan on pipes, Tommy Peoples on fiddle, Matt Molloy on flute — the traditional bona fides were unimpeachable, which gave the band permission to play loud and fast. Lunny and Mícheál Ó Domhnaill on guitar built a percussive foundation underneath all of it. The band 'ran out of energy' by 1979, as Lunny put it — which is what happens when you've been playing at that intensity. Moving Hearts (1981–1984) was the most explicitly political project. Moore had songs about Northern Ireland and the hunger strikes that didn't fit the Planxty sound. Lunny wanted bass and percussion and a saxophone. The result was a band with a rock drummer, a jazz sensibility, and Davy Spillane's uilleann pipes threading through the middle of it. The 1981 Eurovision interval piece, Timedance — composed by Bill Whelan and Lunny — became the direct seed of Riverdance a decade later, though Whelan developed that show without Lunny. That omission is worth noting. The later work — Mozaik, Coolfin, the Atlantic Arc Orchestra, Usher's Island — shows what happens when a musician who has already changed a tradition keeps working because he genuinely can't stop. The collaborations with Kate Bush, Sinéad O'Connor (with whom he had a son, Shane, who died in 2022), Elvis Costello, and Mark Knopfler aren't just name-drops: they're evidence that the rhythmic and harmonic vocabulary Lunny developed in Irish traditional contexts translated outward into forms that had nothing to do with where he started. The 1996 Common Ground album — Bush singing a Gaelic song learned phonetically, Bono, O'Connor, Costello — is either a beautiful mess or a beautiful object depending on your tolerance for ambitious crossover projects. Either way, it's unmistakably his. Lunny died on 23 October 2026, aged 79, after a diagnosis of cancer. He received lifetime achievement awards from BBC Radio 2 in 2018 and RTÉ Radio 1 in 2025, the latter presented by Moore. RTÉ broadcast a biographical documentary, In Time: Dónal Lunny, in August 2026. He is survived by his partner Una O'Boyle and three children: Oisin, Cora Venus, and Sora.