A concert performed by an orchestra made up entirely of strangers recruited on the London Underground has taken place.
Shaun Buswell, 36, from Swindon, recruited the musicians for the gig to raise money for charity.
Up to 70 people played at the Shepherd's Bush Empire after he set himself the challenge of putting the orchestra together by 12 December 2012.
The money will go to the Daytrippers charity which works with ill children.
Mr Buswell said he approached more than 300 people on the Tube.
He said: "Amazingly I found everyone I wanted apart from someone who played the English horn.
"And the last musician I found, who plays the euphonium, works for Transport for London.
"It's been an incredibly humbling experience."
The project is called the 12.12.12 Underground Orchestra Challenge.
Shaun imposed a number of rules when recruiting the musicians, including not knowing them personally.
They also had to be carrying their instrument when he met them and the initial meeting must have taken place inside the Tube network.
Some of the musicians are well established, with one trumpet player having recorded with Ray Charles. Others have recorded with bands and the orchestra includes students from the Royal Academy of Music
He also recruited twins who he approached independently, two months apart in the same location, Tower Hill Tube station. One plays the violin, the other the viola.