Coulson made his debut on the video hosting website YouTube in 2007, sharing videos of himself playing songs on the electric guitar. His playing attracted the attention of the famous American guitarist Paul Gilbert, who invited him to be a guest instructor for the Great Guitar Escape he created in July 2012, as well as seeing him being invited on stage to sit in with American blues musician Walter Trout in October 2012. This publicity would lead to Coulson joining the British rock band Asia. When Asia's guitarist Steve Howe retired from the band in January 2013 in order to pursue other projects, Coulson was selected as his replacement, despite being decades younger than his bandmates.
Asia
Line-up
Current members
John Wetton - lead vocals, bass, guitar (1981-1983, 1984-1986, 1989-1991, 2006–present)
Geoff Downes - keyboards, keytar, backing vocals (1981-1986, 1990–present)
Carl Palmer - drums, percussion (1981-1986, 1989-1992, 2006-present)
Sam Coulson - guitar (2013–present)