What do classic rock, Southern spirits and cake’s sworn rival have in common? Nothing, really—but they’ll all be on the lineup during this bash. Representatives from Saltie and the Brooklyn Kitchen will judge a homemade pie baking contest. Meanwhile, take advantage of the cheap drink specials, which include $3 Brooklyn Brewery beers and $2 shots of Buffalo Trace bourbon and watch concert footage and snippets from Led Zeppelin’s totally bizarre concert film, The Song Remains the Same, in the museum's backyard.