For the touring musician keeping instruments in top repair is a top priority. What about those stars whose main instrument. Is -- voice. Truly startling number of today's best singers have had to... See More
For the touring musician keeping instruments in top repair is a top priority. What about those stars whose main instrument. Is -- voice. Truly startling number of today's best singers have had to undergo surgery. On their vocal -- raising the question of what exactly. Is broken here here's ABC's Chris -- What could possibly be wrong. It was singing like this. That voice has made -- -- a favorite to sweep the Grammy. Weeks after the September concert -- Albert Hall. The 23 year old singer songwriter had surgery to repair her vocal cords and save her career. He's not the only superstar to go under the ninth lately. 34 year old heartbreak warfare singer John Mayer. What you with a song singer 44 year old Keith -- both getting treatment. What is happening to the vocal cords but -- singers. Them to show you. Something like what -- -- -- another singer who has what's called hemorrhagic pop. Polyps not jewels even hemorrhaging. According to doctor Sean in this area who treats lots of the biggest money making singers in the business. Damage like this shuts down an -- list voice. Essentially keeping -- to -- court -- meeting right so this person had actually no voice what's it like for -- singer. It's devastating. Poor vocal technique and lack of rest can be culprits. -- easier to find because of the new realities of the music fits so dependent on tour. The age where a singer -- -- seeing two or three shows a week resting between not do any press. Not stipulate tweeting about it and be famous person -- As seen in this film never say never. Justin Bieber brought in voice coach Jim Smith to help the monitor is demanding schedule. -- -- -- -- He's giving it everything he's gone but doing 86 -- There's a lot to its. As to the damage done doctor necessary says minimally invasive laser surgery the kind of -- -- Heels these vocal -- wounds with minimal risk and still it's a last resort. Thanks to the cautionary tale of sound of music star Julie Andrews. The singing voice was damaged after surgery in 1997. But it's never too late to look after your voice. Seve superstars -- learned -- gradually so Little Rock journalists brought you here rock and -- been very good to me but I I've done my time. After more than four decades on the road Paul Stanley -- -- has performed thousands of shows. All those kind notes. Took their soul. -- -- -- the -- -- complete idiot because people cheering for so you do the impossible and when you don't have enough time to recuperate afterwards. Is it just the catches up with you that's why the kiss vocalist -- work done recently. Surgery on his vocal cords by noted doctor -- sites now what do you evaluate looked a year vocal cord you know he said Mike courts actually looked great for somebody who worked as much as I did. Good news for rock and roll veterans recording and producing a new kids CD I lead a pretty pretty good healthy life that whole cartoon lifestyle. That some people think is key to being a rock star. Is your demise even -- -- yet to go rolling in the deep once more since her surgeries may have gotten the news. -- -- -- -- -- -- -- Fantastic I'm Chris Connolly for -- Los Angeles.
This transcript has been automatically generated and may not be 100% accurate.