"Blue" is the title song from Joni Mitchell

Joni Mitchell

Joni Mitchell, CC is a Canadian musician, singer songwriter, and painter. Mitchell began singing in small nightclubs in her native Saskatchewan and Western Canada and then busking in the streets and dives of Toronto...

's 1971 album of the same name

Blue (Joni Mitchell album)

Blue is the fourth album of Canadian singer-songwriter Joni Mitchell. Exploring the various facets of relationships from infatuation on "A Case of You" to insecurity on "This Flight Tonight", the songs feature simple accompaniments on piano, guitar, and Appalachian dulcimer...

. There has been persistent speculation that the song is about fellow songwriter David Blue, who was a friend and possible love interest of Mitchell's when the album was released. She has denied the connection.

The lines "acid, booze and ass, needles guns and grass, lots of laughs" from Blue were sampled for a bonus track on Mac Dre

Mac Dre

Andre Hicks , better known by his stage name Mac Dre, was an American rapper.-Biography:Andre Hicks was born in Oakland, California but moved to Vallejo while still a child...

's Genie of the Lamp album. The track is also sampled on "Catch My Drift", a 1989 song by the British group A.R. Kane.

Cover versions

Artists who have performed the song include Sarah McLachlan

Sarah McLachlan

Sarah Ann McLachlan, OC, OBC is a Canadian musician, singer and songwriter. Known for her emotional ballads and mezzo-soprano vocal range, as of 2006, she has sold over 40 million albums worldwide. McLachlan's best-selling album to date is Surfacing, for which she won two Grammy Awards and four...

 on her 1996 compilation Rarities, B-Sides and Other Stuff.