Halloween Costume Dance Party: 10 a.m., Carbon Valley Regional Library, 7 Park Ave., Firestone. Come to the library to show off your Halloween costume. There will be dancing, activities, treats and a costume parade through the library. highplains.libcal.com.

Leftoween: 5 p.m., The Garden at Left Hand Brewing, 1245 Boston Ave., Longmont. Enjoy live music with Crick Wooder, deadly delicious brews and food trucks and specially concocted hot whiskey ciders. Free, lefthandbrewing.com.

Funk it Up concert and costume party: 6 p.m., Bootstrap Brewing Company, 142 Pratt St., Longmont. Funk It Up is a funk, R&B, motown, dance and classic rock band covering dance tunes from Joe Cocker, James Brown, C Lo, Lady Gaga, Maroon 5, Van Morrison, Earth Wind & Fire, Stevie Wonder, Parliament, Cheryl Lynn, F

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