This is the amazing moment a Waitrose employee and part-time busker, 25, is signed on the spot by the pop music manager who created boyband Blue after he saw her arriving for her shift with her guitar on her back and asked her to play.

Karina Ramage, 25, had arrived for her shift at the store in West Hampstead, north-west London, last Friday, when she was seen by Dan Glatman, 44.

Mr Glatman, who had gone into the shop to by biscuits and flour, then asked the 25-year-old part-time busker: 'What's with the guitar?'

Karina Ramage, 25, had arrived for her shift at the store in West Hampstead, north-west London , last Friday, when she was seen by music producer Dan Glatman, 44

Karina Ramage, 25, performs her song 'Wasteland' for pop music manager Dan Glatman, who created boy band Blue, after he spotted her arriving for her shift at a Waitrose store in West Hampstead, north-west London, with a guitar on her back. Mr Glatman was wowed by what he heard and immediately signed her as a client

When the Glasgow-born performer told him she busked in her spare time with the instrument, he added: 'Let's see what you've got'.

He then films her as she performs her song 'Wasteland', which is available on Spotify, about the damage which human activity is doing to the planet.

Footage shows Ms Ramage performing in the biscuit aisle to a wowed Mr Glatman and a gathering crowd of impressed shoppers.

Karina Ramage is a singer-songwriter living in London. After starting off playing covers, she now writes her own music which she describes as 'Pop Folk with way too many harmonies (in a good way)'

Karina (left) performs a gig night in May. She can be seen busking on streets across London

The lyrics include lines such as: 'We throw trash in the oceans, fill the waters with toxins… feed the turtles with bin bags, make the world a wasteland.'

On finishing the song, Ms Ramage receives wild applause, before Mr Glatman can be heard saying: 'I'm in, I'm so in. That sounds like the sort of song the world needs to be hearing right now.'

Posting the video online, Mr Glatman said he was 'blown away' by the impromptu performance and 'offered to be her manager on the spot'.

Karina was carrying her guitar into work at the Little Waitrose in West Hampstead when a passing music producer asked her what she was doing

Mr Glatman, who also spontaneously signed the Froncysyllte Male Voice Choir after hearing them at a wedding in 2006, told MailOnline that he has now signed the rising star and is in the process of looking for a record label for her.

He said: 'It totally blew me away. I was just like "my God"!

'That was just like a hit, she was amazing!

'I went in there for a packet of biscuits and a bag of flour and walked out with a star.

Speaking to MailOnline, Ms Ramage said: 'It’s just come as an amazing surprise because I’ve been working hard for years promoting my music on the streets and in shows, and then when I’m in a non musical part of my life it turns out I’m suddenly in the right place at the right time (stacking shelves at waitrose! You couldn’t make this up!).

'So it was very unexpected but made me so happy. It means a lot more people are able to hear the music I’ve made, which I feel has an important message about our little planet and how we need to look after it.'

Karina's small social following have also recognised her talent, and have left several comments on her social media predicting a bright future for the singer.

Jez Reichmann wrote: 'Such a talented vocal singer. A star in the waiting.'

On finishing the song, Ms Ramage receives wild applause, before Mr Glatman can be heard saying: 'I'm in, I'm so in. That sounds like the sort of song the world needs to be hearing right now'

On finishing the song, Ms Ramage receives wild applause, before Mr Glatman can be heard saying: 'I'm in, I'm so in. That sounds like the sort of song the world needs to be hearing right now. Mr Glatman told MailOnline: 'I went in there for a packet of biscuits and a bag of flour and walked out with a star'

Another fan commented: 'If there's any justice, this lady would get signed today. Great voice, singer-songwriter.

The singer-songwriter currently lives in London. After starting off playing covers, she now writes her own music which she describes as 'pop folk with way too many harmonies (in a good way)'.

Music producer Daniel Glatman has previously helped to create boyband Blue and spontaneously signed Froncysyllte Male Voice Choir in 2006

'Karina is going to become the musical voice of the world,' added Mr Glatman.

'She only works there twice a week. I just could not believe my luck.'

'She's fantastic. I'm really excited about her. It's very rare. You are searching for a needle in a haystack and I found it in a biscuit aisle.'

Mr Glatman previously co-created boyband Blue, who formed in 2000 and went on to win two BRIT awards and release five albums, three of which rose to number one in the UK albums chart.

His previous discovery of the Regimental Band of the Coldstream Guards led to them being signed by record label Universal Music.

Their album, 'Heroes', was released in 2009 and achieved platinum status after it was bought by more than a million listeners.

In 2010, he set up record label Punchbowl Recordings label with film director Guy Ritchie.