If we had to define it, we could say that it was more or less pop music because of the keyboard. This son gis very sweet and relaxing. Obviously, the lyrics of "Imagine" describe a world of hope and peace.One cannot talk about John Lennon and Yoko Ono without mentionning their dress code and hairstyle… Indeed, have a look at this picture to get a glimpse of the time... NO COMMENT !
Times Indeed, don't forget that at that time the nation was in quest of peace, John and Yoko had very long hair and were all dressed in white. Do YOU KNOW that This song "Imagine" is a big classic nowadays, The Rolling Stone music magazine declared that it was the third greatest song of all times! We do hope that this article was not too boring and that from now on you are DEFINITELY a great fan of John Lennon !
And don't 4get : UK ROCKS, that's for sure ! Zohra and Pauline. 
"Imagine" is a song by John Lennon. This song was released on the album Imagine in 1981. The song is about utopia, a perfect world, a dream. (hence the title "Imagine").
Singer
John Lennon (here with Yoko Ono) was an ex-member of the very famous band « The Beatles ». In this song, John Lennon sings and is at the keyboards. He was already very famous when he decided to work on this album. This song became a standard.
As you may remember, the song itself is a utopia, a world without religion, living in peace contrary to what some people endured in real life.