"Eight Miles High" is a song by the American rock band the Byrds, written by Gene Clark, Jim McGuinn (a.k.a. Roger McGuinn), and David Crosby and first released as a single on March 14, 1966 (see 1966 in music). Musically influenced by Ravi Shankar and John Coltrane, "Eight Miles High", along with its McGuinn and Crosby-penned B-side "Why", was influential in developing the musical styles of psychedelic rock, raga rock, and psychedelic pop. Accordingly, critics often cite "Eight Miles High" as being the first bona fide psychedelic rock song, as well as a classic of the counterculture era. The song was subject to a U.S. radio ban shortly after its release, following allegations published in the broadcasting trade journal the Gavin Report regarding perceived drug connotations in its lyrics.

The song's lyrics are, for the most part, about the group's flight to London in August 1965 and their accompanying English tour, as hinted at by the opening couplet: "Eight miles high and when you touch down, you'll find that it's stranger than known." Although commercial airliners fly at an altitude of six to seven miles, it was felt that "eight miles high" sounded more poetic than six and also recalled the title of the Beatles' song "Eight Days a Week". According to Clark, the lyrics were primarily his creation, with a minor contribution being Crosby's line, "Rain grey town, known for its sound"--a reference to London as home to the British Invasion, which was then dominating the U.S. music charts. Other lyrics in the song that explicitly refer to the Byrds' stay in England include the couplet: "Nowhere is there warmth to be found/Among those afraid of losing their ground", which is a reference to the hostile reaction of the UK music press and to the English group the Birds serving the band with a copyright infringement writ, due to the similarities in name. In addition, "Round the squares, huddled in storms/Some laughing, some just shapeless forms" describes fans waiting for the band outside hotels, while the line "Sidewalk scenes and black limousines" refers to the excited crowds that jostled the band as they exited their chauffeur-driven cars. Although the basic idea for the song had been discussed during the band's flight to England, it didn't actually begin to take shape until the Byrds' November 1965 tour of the U.S. To alleviate the boredom of traveling from show to show during the tour, Crosby had brought along cassette recordings of Ravi Shankar's music and the John Coltrane albums Impressions and Africa/Brass, which were on constant rotation on the tour bus. The influence of these recordings on the band would manifest itself in the music of "Eight Miles High" and its B-side "Why". Clark began writing the song's lyrics on November 24, 1965, when he scribbled down some rough ideas for later development, following a discussion with guitarist Brian Jones, before the Byrds made a concert appearance supporting the Rolling Stones. Over the following days, Clark expanded this fragment into a full poem, eventually setting the words to music and giving them a melody. Clark then showed the song to McGuinn and Crosby, with the former suggesting that the song be arranged to incorporate Coltrane's influence. Since Clark's death, however, McGuinn has contended that it was he who conceived the initial idea of writing a song about an airplane ride and that he and Crosby both contributed lyrics to Clark's unfinished draft. In his book, Mr. Tambourine Man: The Life and Legacy of the Byrds' Gene Clark, author John Einarson disputes this claim and ponders whether McGuinn's story would be the same were Clark still alive.Answer this question using a quote from the following article:

How long did it take to compose?
the basic idea for the song had been discussed during the band's flight to England, it didn't actually begin to take shape until the Byrds' November 1965 tour