Jess Glynne found her vocal surgery "traumatic".
The 'Rather Be' singer underwent an operation on her vocal cords earlier this year after suffering issues with her voice and has revealed she found the procedure "one of the most terrifying things" because her whole life revolves around her ability to sing.
She said: "I have to be honest with you, it's probably one of the most terrifying things I've gone through. It's pretty traumatic knowing that your instrument that's your career isn't working and you've got to have an operation. In every operation there's a risk, and you don't know whether it's gonna ... you know, obviously there's that 95 per cent chance, whatever they say, they can never say 100 per cent you're gonna be better. But the concern and the worry is the worst thing."
The 25-year-old star previously revealed she took advice from fellow singing sensation Sam Smith prior to her surgery as he had undergone a similar operation, although she decided against using the same speaking app which the 'Stay With Me' hitmaker used.
Asked if she also used it, she said: "I did have that app, but I didn't really like it because it wasn't loud enough, so I just used a whiteboard!"
And after securing her first solo number one single back in March with 'Hold My Hand', Jess said she felt "overwhelmed" because it was such a special moment.
In an interview to be broadcast at 7pm this evening, she told Free Radio's Adam Wilbourn: "It was the best feeling ever, I have to be honest. Having your own number one, I don't know how to explain how that felt.
"It was the most emotional I've been in my whole career to date! I was just in tears, I was so overwhelmed."