There are two distinct versions of "Sweet Jane" with minor variations, spread over its first four releases. The first release of the song in November 1970 was a version recorded earlier that year and included on Loaded. In May 1972, a live version recorded in August 1970 appeared on the Velvet Underground's Live at Max's Kansas City; this had an additional bridge that was missing from the Loaded release.
In February 1974, a live version recorded in December 1973 (similar to the Loaded version but with an extended intro and hard rock sound), appeared on Reed's Rock 'n' Roll Animal. The elaborate twin guitar intro on the Rock 'n' Roll Animal version was written by Steve Hunter[3] and played by Hunter and Dick Wagner, two Detroit guitarists who would go on to play with Alice Cooper. Cash Box said that "this heavy rocker" has a "strong production and good hook" as well as "stunning lead guitar and Lou's inimitable vocals."[4] Record World said that "With a style that generates pure excitement, sweet sounds abound!."[5]
In September 1974, a down-tempo live version recorded in late 1969 was included on 1969: The Velvet Underground Live, with a different song structure and lyrics. When a restored version of the original release on Loaded was eventually unveiled on Peel Slowly and See in 1995 (and in 1997 on Loaded: Fully Loaded Edition), it turned out that some of the 1969 lyrics (notably the entire bridge as heard on Live at Max's Kansas City) had originally been included in the Loaded version as well, but were scrapped in the finished edit.
In a 2005 interview, former Velvet Underground member Doug Yule stated that the main signature "riff" of the song (as it appears on Loaded) was finalized in the studio just before the tracks were recorded, and it was achieved by Lou Reed's playing "cranked-up very loud" through a large Sunn amplifier.[6] In addition to recording the bass track, the drums on the recording were performed by Doug Yule because Velvet drummer Maureen Tucker was pregnant at the time and not present during the Loaded sessions.[7]
Lou Reed performed "Sweet Jane" in two keys. The 1969 and 1970 versions were in D as was 1972's American Poet version. On 1973's Rock 'n' Roll Animal and 1978's Take No Prisoners, the song is in E, and on 1984's Live in Italy, the song is back in D.