This is a clip of Portico Quartet live at The Roundhouse, Chalk Farm, London in 2013 performing Steepless, featuring Swedish singer Cornelia Dahlgren.

https://realworldrecords.com/release/614/live-remix/

https://realworldrecords.com/artist/3322/portico-quartet/

http://www.porticoquartet.com

https://en.wikipedia.org/wiki/Portico_Quartet

http://en.wikipedia.org/wiki/Cornelia_Dahlgren

http://www.iamcornelia.com