From Wikipedia: Sandy Denny, born Alexandra Elene Maclean Denny (6 January 1947 – 21 April 1978), was an English singer and songwriter who has been described by Allmusic's Richie Unterberger as "the pre-eminent British folk rock singer". She emerged in the mid 1960s while still a teenager, performing on the folk revival scene where she displayed her mastery of traditional singing and interpretation. Her song, "Who Knows Where the Time Goes?", written during these early years, has been covered by numerous artists and is regarded as a classic of its type. Link.