Songfacts®:

• English musician Davy Graham (1940-2008) was one of the most influential folk guitarists of the 20th century. This acoustic instrumental, which he penned at the age of 19 for his then-girlfriend, is Graham's most famous piece. A masterpiece of contrapuntal blues, it was one of a series of songs that he wrote in the late 1950s, in which he, according to Mojo magazine, sought to "combine classical techniques with jazz, folk and blues." The tune first appeared on Graham's debut EP 3/4AD in 1962.
  
  Graham returned to London from a trip to Morocco in the early 1960s with a new guitar tuning DADGAD, which was widely adopted by a plethora of English and Irish acoustic guitarists. Sadly he also returned with a heroin addiction that led to Graham being absent from the music scene for many years. However, prior to his death, Graham had returned to the stage to play live and had been the subject of a 2005 BBC radio documentary.
• Artists who have covered this include Bert Jansch (on his 1965 self-titled debut album as "Angie"), Simon & Garfunkel (on their 1966 LP Sounds of Silence) and Chicken Shack (On their 1969 album 100 Ton Chicken).