Speaking of Banksy, there's Exit Through the Gift Shop, which is sort of documentary and possibly part fiction? (87 minutes)
Twenty feet from stardom (2013, 91 minutes) -- about backup singers. Haven't seen it, but I guarantee that the soundtrack is fabulous.
What about concert movies? Stop Making Sense (1984, 88 minutes, Talking Heads); one of the best movies I've ever seen. Ziggy Stardust and the Spiders from Mars (1973, 90 minutes, David Bowie); haven't seen it, though.
[spends an hour browsing through IMDb]
For reference, IMDB has an advanced search feature that includes lots of options, including running time: http://www.imdb.com/search/title
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Twenty feet from stardom (2013, 91 minutes) -- about backup singers. Haven't seen it, but I guarantee that the soundtrack is fabulous.
What about concert movies? Stop Making Sense (1984, 88 minutes, Talking Heads); one of the best movies I've ever seen. Ziggy Stardust and the Spiders from Mars (1973, 90 minutes, David Bowie); haven't seen it, though.
[spends an hour browsing through IMDb]
For reference, IMDB has an advanced search feature that includes lots of options, including running time: http://www.imdb.com/search/title