A band making unknown person big

My wife just got back in from work after a night shift, she told me a story of another nurse that was going to L.A. At first my wife thought it was a story of another nurse taking time out and travelling abroad until she heard the full story. I will not repeat everything as it would take too long but.....
This Girl called Amy ( canny remember her surname) that is a nurse was in Ireland watching "snow patrol" a band that come from Scotland. She was waving a banner saying " I belong to Glasgow" or something along those lines. The band on stage noticed this and invited her up to sing a song with them....god eh???? but it gets better...
People associated with the band ( be it the band themselves or manager) were so impressed with her singing they created a band for her. She also has a friend that played the guitar in on this too.
They have played with snow patrol a couple of times for support and now she is off to L.A to make her first album.

All this from waving a bit of material to say where you come from..... I think this is amazing!! It just goes to show you dont actually have to do anything as her guitarist friend didnt. All you need is a friend with a good voice to get up on stage with a famous group and then get asked by your friend to join them.

So If she makes it big or has a few hits and reveals her story on an interview then ye can switch off and say you already know,lol.

I dont think there is a name for the band, I think it is under her name.

Any more stories of success any knows from being unknown to getting noticed?
Please no X factor stories or pop idol.

Ken