The hills are alive - the sound of cellists took walkers on Snowdon by surprise
Forget concert halls and theatres: a trio of cellists have scaled new heights to perform their music.
The three self-styled "extreme cellists" threw their heavy instruments over their back to scale Snowdon and then played together at the top.
It was the latest mountain in their challenge to play at the top of the highest peaks in the UK and Ireland.
Jeremy Dawson, Clare Wallace and James Rees are raising money for Mountain Rescue and a spinal injuries charity.
They have already climbed to the top of Ben Nevis in Scotland and England's Scafell Pike before entertaining surprised walkers at the top of Snowdon on Sunday.
Next on their list is Carrauntoohil - Ireland's highest peak - on Wednesday.
The trio - who are all amateur musicians - said they were inspired by the sport of extreme ironing, where adventurous people iron in remote and risky locations, such as on top of mountains and tall buildings.
They have previously played on top of every Anglican cathedral in England.
Mr Dawson, 32, from Sheffield, who by day is a university lecturer in statistics, said the climb to the top of Snowdon took just over three hours.
"It was a long slog but we were really lucky with the views - it was beautiful at the top," he said.
It took just over three hours for the cellists to scale Mount Snowdon
"Our cellos weigh about two stone (12.7 kg) each and we carry them on our backs like big ruck-sacs. It's hard work, especially going up the steep bits.
"But we've been in training, doing fitness work and taking our cellos up hills."
He said a few people joined them to walk to the top to listen to the music, but most walkers on the mountain were taken by surprise to hear live music being played 3,560ft (1,085m) up on Snowdon's summit.
"There were several dozen people on Snowdon listening to us - many of them were caught by surprise, which is nice," said Mr Dawson, who has been playing "extreme" music with school teachers Ms Wallace, 48, from Sheffield and Mr Rees, 28, from Ely, Cambridgeshire, since 2003.
The trio have so far raised over £3,000 from their mountain music challenge, which will be donated to the spinal cord injury charity, Aspire and mountain rescue organisations around the UK and Ireland.