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In the beginning, during one concert, Jimi Hendrix sets his guitar on fire and then smashes it to pieces. This was done for entertainment, nothing too bad.

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Many uses of the f-word also the s-word is said a few times.

A clip where Jimi and a couple of other women are smoking a joint in the back of a limo.

Some discussions of LSD use.

A good bit of cigarette smoking at times throughout the doc.

It seems likely that several of the participants for this documentary are high / stoned during their interviews.