"Kashmir" is a song by the English rock band Led Zeppelin from their sixth album Physical Graffiti, released in 1975. It was written by Jimmy Page and Robert Plant (with contributions from John Bonham) over a period of three years with lyrics dating to 1973. The song became a concert staple, performed by the band at almost every concert after its release. The song has been described as one of Led Zeppelin's two most overtly progressive epics.
Page and Plant released a longer, live version, recorded with an Egyptian/Moroccan orchestra, on No Quarter: Jimmy Page and Robert Plant Unledded (1994) and continued to perform the song with an orchestra on their 1995 tour.
The song is more than eight (8) minutes long, which radio stations usually consider too long, but it still received radio plays because "Stairway to Heaven", which was almost as long, had become so popular.
The song is almost entirely built upon an ascending chromatic ostinato over a pedal drone that Page had first recorded in his home studio, using the same guitar tuning (DADGAD) as he used for "Black Mountain Side", "White Summer" and the unreleased "Swan-song". Page explained, "I had a sitar for some time and I was interested in modal tunings and Arabic stuff. It started off with a riff and then employed Eastern lines underneath."