Dolores visited the World Cafe in the summer of 2007, just after releasing her first solo album that May.
O'Riordan had to cancel one of her professional tours with the reunited Cranberries in 2017 because of her back problem; whether that had anything to do with her sudden demise is yet unsure.
The Irish star was found dead in a London hotel room and many celebrities joined Ireland's leader President Michael D. Higgins in saluting the tragic Linger singer, and now Lennox and R.E.M.'s Michael Stipe have added their tributes.
Counterfeit Fentanyl was allegedly found by her bed in a London hotel and the singer was declared dead at the scene.
A Scotland Yard spokesman has said that Dolores' death wasn't being treated as "suspicious", and the case has been handed over to the coroner for examination.
The Cranberries lead singer Dolores O'Riordan at the Vatican Christmas Concert in 2005.
Former England footballer Cyrille Regis dies aged 59
Regis won five caps for England between 1982 and 1987, having been one of the stars of the Baggies team between 1977 and 1984. Regis, who retired from his playing career in 1996, was awarded an MBE in 2008 for his charity work and services to football.
O'Riordan has been a victim of depression, bipolar disorder, and sexual abuse over the course of her life, which led people to wonder if her death was a suicide.
The band sold over 40 million records throughout their whole artistic journey as their album "No Need to Argue" sold seven million copies in the USA while the overall sales were 17 million.
Dolores has been instructed by her doctors to immediately cease work for the next 4 weeks.
"I've also had a lot of joy in my life, especially with my children", she said. "He was such a good man, very kind and I loved him", she said. "The world has lost a true artist today.Noel, Mike and Fergal".
Various musicians from different music backgrounds offered their condolences for O'Riordan's death, especially the Irish songwriter Hozier who expressed his sadness saying that O'Riordan's voice "threw into question what a voice could sound like in that context of rock". "Her family did so much for her and supported her all the way through".
"I've enjoyed the years spent together and privileged to call her a close friend". Ms O'Riordan went public some years ago about her fight with depression which she said was especially hard for her after her father Terence died in 2011 after a long battle with cancer.
The body of O'Riordan will then be flown home for her funeral in her native Limerick, which is likely to take place early next week.