The folk singer died peacefully at the age of 72 at her home in Caherlistrane, Co Galway, on Monday.
The internationally-acclaimed artist from Sylane was one of the founding members of Irish folk music group De Dannan group in 1975 before pursuing her solo career.
The traditional folk singer, who was previously an actress, was best known for her 1988 recording of Dougie MacLean’s Caledonia.
Ms Keane, who released albums such as Solid Ground or Night Owl during her music career, was a breast cancer survivor.
A funeral notice posted on Wednesday said that her passing was “Deeply regretted by her beloved family, son Joseph, daughter Tara and her partner Colin, grandchildren Megan and Cian, sister Teresa, brothers Pat, Matt, Noel and Sean, brothers-in-law PJ and Bunny, sisters-in-law May, Florence, Geraldine and Ann, nieces, nephews, grandnieces, grandnephews, cousins, relatives, neighbours, family friends and Dolores’s wide circle of friends and colleagues within the music industry.”
Keane was pre-deceased by her parents Matt and Bridie, sisters Marian and Christina, niece Stella, sister-in-law Virginia, uncles and aunts, including Rita and Sarah.
She will repose at Carey’s Funeral Home, Claran Road, Headford (H91 E6X9) on Thursday evenin from 5pm until 8pm.
” A celebration of Dolores’s life will take place on Friday afternoon, 20th March at 3pm in St Patrick and St Cuana Church (Corner Chapel H91 V9F7), Kilcoona,” the notice said.
Her burial will take place aterwards in Donaghpatrick Cemetery. The mass will also be livestreamed.
The singer’s family will arrive at the church at 2pm on Friday, for people who wish to sympathise with them prior to the Mass, the notice read, with the house strictly private.
Her family thanked all those who had expressed their sympathy and support.
President Catherine Connolly led tributes to the late music star and said she was “one of the great voices of this island”.
“It is with profound sadness that I learned of the death of Dolores Keane,” President Connolly said on Monday.
“She was one of the great voices of this island, and of the world.
“Shaped from childhood by the tradition of her aunts Rita and Sarah, she carried that forward with fierce, joyful intelligence, and she made it new.
“With De Dannan, in her solo work, on A Woman’s Heart, and in recordings that have become part of the fabric of Irish life, she showed what it means to bring the full weight of yourself to a song.”
“Nanci Griffith once said she had a sacred voice. She was right. But what made it sacred was her honesty. She gave everything, without pretence,” she added.
The President sent her “deepest condolences” to Ms Keane’s son Joseph, daughter Tara, brother Seán, and sister Theresa.
“To all who loved her and were moved by her, and we are many, I say simply: a voice like hers does not leave us, it moves into the air and lives forever.
“Ar dheis Dé go raibh a hanam dílis,” she added.
In a post on social media, Taoiseach Micheál Martin said he is “deeply saddened” at Ms Keane’s passing.
“With her captivating voice, Dolores thrilled audiences up and down the country whenever she performed.
“An icon of Irish folk music,” he wrote in a post on X.
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Tánaiste Simon Harris also paid tribute to the late singer, describing her as “one of Ireland’s greatest”.
In a statement, Mr Harris said: “I am deeply saddened to learn of the passing of one of Ireland’s greatest singer-songwriters, Dolores Keane.
“Dolores possessed a voice that could reach deep into your soul. A voice that could carry a sense of joy, but also sorrow in each and every note.
“Dolores was also so popular, simply for her unrivalled sense of wit and kindness that touched the lives of so many.
“Above all, Dolores Keane summed up everything good about our proud Irish musical tradition,” he said, adding that Ms Keane will be missed in her home county of Galway.
“My deepest condolences to her family, friends and huge circle of fans. Ar dheis Dé go raibh a hanam,” he added.
Meanwhile, Minister for Tourism, Patrick O’Donovan, said Ms Keane was “a true pioneer of the folk tradition”.
“I am deeply saddened by the passing of Dolores Keane, one of Ireland’s most soulful and iconic voices,” he said.
“A true pioneer of the folk tradition, her unique gift brought the beauty of Irish song to the global stage.
“Her music and her spirit will live on in the hearts of all who were moved by her incredible talent. May she rest in peace.
“Ar dheis Dé go raibh a hanam,” he said.