When “Almost Famous” screens on a LED video wall as big as the stage at EPIC Event Center , the night will be about more than just reveling in the cinematic gold that is the “Tiny Dancer” tour bus scene .

It’s a whole experience meant to give fans a deeper dive into Cameron Crowe’s 2000 coming-of-age movie set during the 1970s rock scene. Twenty-five years after the film’s release, they’ll get to hear from Marti Frederiksen, who provided the vocals for Jason Lee as lead singer of Sweetwater, the fictional band a 15-year-old William Miller (Patrick Fugit) winds up covering for Rolling Stone.

While not exactly a household name — at least not when you’re talking about a movie cast that boasts Kate Hudson, Billy Crudup, Philip Seymour Hoffman and Frances McDormand — Frederiksen has wor

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