Hours after the awful news broke, record company boss and BGT boss Simon announced plans t reel a song to raise money for the victims by releasing a cover of Simon & Garfunkel hit Bridge Over Troubled Water by enlisting the help of a host of stars.
According to The Sun, Harry Styles and Niall Horan are now jiggling their schedules around to make time for it and Louis Tomlinson and Liam Payne have already confirmed.
Stars including Adele, Rita Ora and Lily Allen have shown their support in the aftermath of the tragic fire that tore through the 27-storey Grenfell Tower in the early hours of Wednesday.
However, the very prospect of them all being on the same record will be a huge coup as Cowell pushes to raise money for victims of last week's tragic blaze.
A source said: "If all four (One Direction) came on board, it would be as solo acts as Liam has to record in the USA".
That's when I thought, I'm not just going to sit here and do nothing.
Simon previously told Good Morning Britain, "I hope it will prick a few people's consciousness and it might spur someone on to do something else".
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The Sun also reports that the newspaper is responsible for waiving the Value-Added Tax costs for the song, which Simon Cowell thanked them for.
The father-of-one continued: "We've already had a lot of people call in and say they would love to do it".
One of Cowell's phone calls could also be to Adele.
'I feel honoured to be a part of it so to be here today is really important.
She said of what she saw: "Everyone was trying to organise and I think between that time and me leaving (at around 10am), it got overwhelming".
"Seeing the building it made a big impact".
He said: "He [Simon Cowell] is from ITV, I'm from the BBC, and it felt like a really nice message about working together".
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