Eles realmente filmaram no Lollapalooza.
Veja um artigo sobre as filmagens no Chicago Tribune .
When “Project Almanac” wanted to shoot on location at Lollapalooza in 2013, the found-footage film — which revolves around a group of high school students who time-travel to various locations, including the Grant Park music festival — turned to Chicago music promoters Jeff McClusky & Associates to persuade fest organizers C3 Presents.
“Because of how sensitive C3 is to anything invasive to the festival goers’ experience, Paramount (Pictures) asked me to approach them due to my long relationship with C3,” McClusky said over the phone last week. “My role was to get C3 comfortable with the idea and to serve as a music consultant to determine which artists we might use in the film for background music.”
Paramount’s strategy worked. C3 gave the production the green light to film on fest grounds. The scenes reportedly involve the high school students ditching chemistry class to attend Lolla, which they couldn't do prior to building the time machine because they couldn't afford tickets. Filming took place at Lolla for two days and, for the most part, went under the radar.