Glass Caves: Meet the band who busk

Glass Caves admit being "petrified" when they first went busking in 2011.

"We didn't know if people were going to throw stuff or boo us," says singer Matt Hallas.

"But we made a reasonable amount. We looked at each other and thought 'we're onto something here'."

Six years on, the York four-piece have started to make a living from playing on streets around the UK.

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