Family and friends of performer Katherine Crowe will sing her version of Smile at a service of celebration today (Tuesday).
Hundreds of people have paid tribute to the mother-of-two after she died last week at the age of 39 following a long battle with cancer.
The service takes place at All Saints Church, in Lonan, at 11.30am and follows a private burial.
Extra buses and trams have been laid on from Douglas.
Husband Andy said: ‘There is no dress code, it’s very important everyone knows that. We want people to be casual and happy.’
He has asked people to stop writing condolences, and instead share a memory of Katherine, which he will read along with her moving blog that she kept over two and a half years.
‘I never read her blog. After all this is done I’m going to write some blogs for her followers in respect of the fact people loved her.
‘Eventually I will read them myself. I was living half of it and wanted to save it as a memory box. It’s going to be gold dust.’
Explaining why the blog was so important to Katherine, Andy said: ‘She wanted to let people know it’s all right to not go crazy and kill yourself with treatments. It’s all right to back off and live your life.
‘She couldn’t take a lot of treatment, it would have killed her.’
Katherine left Andy with an instruction that he was not allowed to waste what she had built up.
‘I’ve got to carry it on,’ he said. ‘I’ve just got to work out what we are going to do and start doing it.’
Katherine, of Groudle, had described recording her version of Charlie Chaplin’s Smile at Abbey Road Studios, in London, with the London Metropolitan Symphony Orchestra in 2012 as a ‘dream come true’.
She leaves two children, Becky, 11, and Jack, eight.