Emeralds is an American electronic music trio founded in 2006 by members John Elliott, Steve Hauschildt and Mark McGuire. The band was based in Cleveland, Ohio and then in Portland, Oregon, United States.

Mark McGuire is an American musician. A former member of Emeralds, McGuire is a multi-instrumentalist who has been producing solo material since 2007. He has released three solo albums and produces mostly instrumental music that combines electronica and acoustic guitars with psychedelic influences. He has toured internationally as a solo artist supporting among others Julianna Barwick and Jenny Hval while playing headlining shows in Europe, North America, Japan and Australia.