According to David Bowie, then in the middle of recording of his Berlin Trilogy with Brian Eno, its impact on the genre's direction was recognized early on:

“ One day in Berlin ... Eno came running in and said, 'I have heard the sound of the future.' ... he puts on 'I Feel Love', by Donna Summer ... He said, 'This is it, look no further. This single is going to change the sound of club music for the next fifteen years.' Which was more or less right.[4] ”


The album version lasts for almost six minutes. It was extended for release as a 12" maxi-single, the eight-minute version included on the 1989 compilation The Dance Collection: A Compilation of Twelve Inch Singles. The song was slightly edited on the 7" format, the fade-in opening sound reaching maximum volume sooner. A version which fades out at 3:45, before the third verse and final choruses, has been included on a large number of greatest hits packages and other compilations issued by PolyGram, Mercury Records, Universal Music and others, such as 1994's Endless Summer: Greatest Hits and 2003's The Journey: The Very Best of Donna Summer.
In 2004, Rolling Stone ranked "I Feel Love" #411 on their list of the 500 Greatest Songs of All Time. The review for the song stated that Moroder and Summer "claimed tomorrow in the name of disco."[5]

Following the track's success, within months Summer and Moroder produced the 11-minute "Now I Need You"/"Working the Midnight Shift" sequence on Summer's 1977 double album Once Upon a Time, which successfully builds on "I Feel Love"'s pioneering ethereal vocals, mechanised beats, sequenced arpeggios and ostinato basslines.

http://en.wikipedia.org/wiki/I_Feel_Love