X Factor mentor Tulisa Contostavlos says she's going to miss singer Lucy Spraggan.
Host Dermot O'Leary announced that Lucy wasn't well enough to perform on Saturday's show and she has decided to pull put of the competition.
Tulisa, her mentor, said it won't be last people will hear of Lucy.
Tulisa said: "She's just an amazing person to work with. I'm going to miss her very much. We are still in touch, this is not the end of Lucy or the last you are going to see of her ... big big things to come. I just want send her all my love."
The first performer of the show, controversial contestant Rylan Clark, made a shout out to the singer during his rendition of Madonna number one hit, Hung Up. "This one is for you Spraggan, I love you," he said mid-song.
Spraggan earlier said she was "gutted" to leave the X Factor because she is not well enough to perform. The singer pulled out of last weekend's shows and received a free pass to this week. But since she is not well enough to perform this weekend, Spraggan said she felt it would be unfair to accept another free pass.
In a statement from the show's organisers, she said: "I am gutted not to be able to continue on this journey but I'm not well enough to perform. To accept another free pass having missed last weekend would not be fair on the others in the competition.
"I wish them all well. I would like to express my thanks to everyone who has supported me. There is no way that this setback will prevent me from fulfilling my ambition. You'll be hearing from me again very soon."
Spraggan, 20, writes her own songs and has played guitar for years. She works as a portrait seller in Sheffield. Originally from Buxton, Derbyshire, she performed a song at her audition with lyrics about what happens to her on a night out.
Spraggan will not be replaced in the competition and one act will leave the show this weekend, said organisers.