KT Tunstall has opened up about how frightened she was when she first developed tinnitus.
The award-winning musician developed the problem in 2008 after going to a Spice Girls concert.
She said: "It was awful when it first happened to me, very hard to accept and really frightening."
She went on: "It started after I'd gone to a Spice Girls concert and got great seats but unfortunately they were also pretty close to the huge speakers. After that evening I had this incessant high pitched whine in my left ear.
"I didn't know what it was and at first just hoped it would go away, but it didn't and it started to drive me mad.
"It got very bad at one point in those early months and I was struggling on stage because it really affected my hearing certain tones, it can affect the top frequency of that ear's hearing when it's very loud."
The singer has always been acutely aware of hearing problems - her youngest brother, Daniel, was born profoundly deaf.
That personal experience of his ultimately successful battle to overcome his disability - coupled with her own condition - has led to her involvement in a campaign, Hear The World.
It's a global initiative to raise awareness about hearing loss and a host of other celebrities, including Take That, Jude Law and Elle MacPherson, have all been photographed by Bryan Adams in the same pose, with one hand cupped behind their ear to convey conscious hearing.
:: See www.hear-the-world.com for more information about the campaign.