On a nostalgic drive through Turnstile’s Baltimore hometown last month, the band’s workaholic frontman, Brendan Yates, pointed out an empty lot that looked like the eroded remnants of a loading dock where the band once played a show. A few days later …

Part spoof and part serious, the film is about mythmaking as much as it is about music. The result is delightfully destabilizing.

The director Alex Ross Perry said Stephen Malkmus of Pavement told him to “avoid the legacy trap.” The result is a music documentary with made-up elements that really existed. What?