Question: What  is a song written by a Canadian singer-songwriter who formed Buffalo Springfield with Stephen Stills, Richie Furay and others ?

Context paragraphs:
Buffalo Springfield (compilation album): Buffalo Springfield is a compilation album released on Atco Records in 1973.  It is the fifth album by rock band Buffalo Springfield, and their second compilation.  It was assembled by the label well after the band had broken up at a time when Crosby, Stills, Nash & Young were both quite popular and had not released any new material as a group for over two years, with their 1974 reunion tour eight months away.  It features a nine-minute extended version of the song "Bluebird" by Stephen Stills (consisting of a live jam appended to the studio version), only available elsewhere on the Warner Special Products LP compilation "Heavy Metal – 24 Electrifying Performances" (Volume 2 in the "Superstars of the 70's" series), released in 1974.  It has never been issued on compact disc in North America and is currently out of print.

Neil Young: Neil Percival Young, {'1': ", '2': ", '3': ", '4': "} (born November 12, 1945), is a Canadian singer-songwriter, musician, producer, director and screenwriter.  After embarking on a music career in the 1960s, he moved to Los Angeles, where he formed Buffalo Springfield with Stephen Stills, Richie Furay and others.  Young had released two solo albums by the time he joined Crosby, Stills & Nash in 1969, in addition to two as a member of Buffalo Springfield.  From his early solo albums and those with his backing band Crazy Horse, Young has recorded a steady stream of studio and live albums, sometimes warring with his recording company along the way.

Kristen Stills: Kristen Stills (née Hathaway; born 12 October 1966) is an executive producer and autism awareness activist.  She is wife of American musician and multi-instrumentalist Stephen Stills of Buffalo Springfield and Crosby, Stills, Nash & Young.  She starred with son Henry Stills in an independent documentary film directed by Tricia Regan titled "" which was released in April 2007.  She received an "Outstanding Nonfiction Special" Emmy Award for her role as Executive Producer on "".  Since 2012, Kristen and Stephen have hosted Light Up The Blues, an event that benefits autism science and advocacy organization Autism Speaks.  The annual event has included musical performances by Crosby, Stills & Nash, Neil Young, John Mayer, The White Buffalo, Brandi Carlile, Ryan Adams, Steve Earle, Rickie Lee Jones, Lucinda Williams, Don Felder, and Chris Stills who perform alongside Spectrum Artists such as Nick Guzman, Matt Savage, and Rio "Soulshocka" Wyles.  The scheduling coincides with Light It Up Blue, World Autism Awareness Day and Autism Awareness Month in April.  In 2013, Stills was executive producer for the concert film "Light Up The Blues" the goal of which was to raise awareness for the annual event.

Last Time Around: Last Time Around is the third and final album by folk rock band Buffalo Springfield.  Released 1968, it featured Neil Young, Stephen Stills, Richie Furay, Dewey Martin, Bruce Palmer, and Jim Messina, who also worked as producer and a recording engineer.

Buffalo Springfield: Buffalo Springfield was an American rock band active from 1966 to 1968 containing Stephen Stills, Neil Young, and Richie Furay, which released three albums, and several singles including "For What It's Worth".  The band combined elements of folk and country music with British invasion and psychedelia influences, and, along with the Byrds, were part of the early development of the folk rock genre.

Richie Furay: Paul Richard "Richie" Furay (born May 9, 1944) is an American singer, songwriter, and Rock & Roll Hall of Fame member who is best known for forming the bands Buffalo Springfield with Stephen Stills, Neil Young, Bruce Palmer, and Dewey Martin, and Poco with Jim Messina, Rusty Young, George Grantham and Randy Meisner.  His best known song (originally written during his tenure in Buffalo Springfield, but eventually performed by Poco, as well) was "Kind Woman", which he wrote for his wife, Nancy.

Poco: Poco is an American country rock band originally formed by Richie Furay, Jim Messina and Rusty Young.  Formed following the demise of Buffalo Springfield in 1968, Poco was part of the first wave of the West Coast country rock genre.  The title of their first album, "Pickin' Up the Pieces", is a reference to the break-up of Buffalo Springfield.  Throughout the years Poco has performed in various groupings, and is still active.

Bad Fog of Loneliness: "Bad Fog of Loneliness" is a song written by Canadian singer-songwriter Neil Young, recorded in 1971 but not released until 2007 on the album "Live at Massey Hall 1971", and in 2009 on "The Archives Vol.  1 1963-1972".  It also appeared on Young's live "Red Rocks" DVD released in 2000.

Crosby, Stills, Nash &amp; Young: Crosby, Stills & Nash (CSN) was a vocal folk rock supergroup made up of American singer-songwriters David Crosby and Stephen Stills and English singer-songwriter Graham Nash.  They were known as Crosby, Stills, Nash & Young (CSNY) when joined by Canadian singer-songwriter Neil Young, who was an occasional fourth member.  They were noted for their intricate vocal harmonies, often tumultuous interpersonal relationships, political activism, and lasting influence on US music and culture.  Crosby, Stills & Nash were inducted into the Rock and Roll Hall of Fame and all three members were also inducted for their work in other groups (Crosby for the Byrds, Stills for Buffalo Springfield and Nash for the Hollies).  Neil Young has also been inducted as a solo artist and as a member of Buffalo Springfield.

Souther–Hillman–Furay Band: The Souther Hillman Furay Band (SHF) was a country rock supergroup led by singer-songwriters Richie Furay (Buffalo Springfield, Poco), Chris Hillman (The Byrds, The Flying Burrito Brothers, Manassas), and J.D. Souther (Longbranch Pennywhistle, noted songwriter for Linda Ronstadt and the Eagles).  The band recorded two albums during the 1970s before breaking up due to disagreements between the members.

Supporting paragraphs: Bad Fog of Loneliness Neil Young
Answer: Bad Fog of Loneliness