[PAR] [TLE] Physical Graffiti [SEP] Physical Graffiti is the sixth studio album by the English rock band Led Zeppelin, released as a double album on 24 February 1975 by their newly founded imprint label Swan Song Records.  The band wrote and recorded eight new songs for the album at Headley Grange, which stretched the total time of the record beyond the typical length of a single LP, so the band decided to make "Physical Graffiti" a double album by including unreleased tracks from earlier recording sessions: one outtake from "Led Zeppelin III," three from "Led Zeppelin IV," and three from "Houses of the Holy", including the unused title track from the latter album. [PAR] [TLE] Kashmir (song) [SEP] "Kashmir" is a song by the English rock band Led Zeppelin.  Included on their sixth album "Physical Graffiti" (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.
[PAR] [TLE] Physical Graffiti [ SEP ] Physical Graffiti is the sixth studio album by the English rock band Led Zeppelin , released as a double album on 24 February 1975 by their newly founded imprint label Swan Song Records . The band wrote and recorded eight new songs for the album at Headley Grange , which stretched the total time of the record beyond the typical length of a single LP , so the band decided to make " Physical Graffiti " a double album by including unreleased tracks from earlier recording sessions : one outtake from " Led Zeppelin III , " three from " Led Zeppelin IV , " and three from " Houses of the Holy " , including the unused title track from the latter album . [PAR] [TLE] Kashmir ( song ) [ SEP ] " Kashmir " is a song by the English rock band Led Zeppelin . Included on their sixth album " Physical Graffiti " ( 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 .
How long did it take to write the album "Physical Graffiti"?
How long did it take to write the album " Physical Graffiti " ?
over a period of three years
over a period of three years