Rayback Collective's Oktoberfest celebration and other events for today

Sep. 28—Today

Rayback Oktoberfest: 5 p.m. Thursday, Rayback Collective, 2775 Valmont Road, Unit 3, Boulder. Enjoy live polka with Polka Folka, participate in a Stein Hoisting contest and imbibe on $6 festbier specials. Free, 303-214-2127, therayback.com.

Ari Melinger-Cohen at BOCO Cider: 5 p.m. Thursday, BOCO Cider, 1501 Lee Hill Drive, Unit 14, Boulder. Ari Melinger-Cohen is a bassist, guitarist, singer, music producer and recording engineer based in Boulder whose songs are carefully honed, genre-blending expressions of his life experience. He uses the music, which is steeped in classic rock, jazz, funk, soul and Americana traditions, to create a canvas that portrays deep messages from the heart. Joe Gallo will accompany him on the guitar. Free, 720-938-7285, bococider.com.

Trident Jazz Jam: 5:30 p.m. Thursday, Trident Café, 940 Pearl St., Boulder. Sit in with a house band of Boulder's finest improvisers to play and solo over classic jazz standards. Pedro Urbina will host the event. Free, tridentcafe.com.

'Earthdivers' book signing: 6:30 p.m. Thursday, Boulder Book Store, 1107 Pearl St., Boulder. Stephen Graham Jones will speak about and sign his new book, "Earthdivers, Vol. 1: Kill Columbus," at Boulder Book Store. $5, boulderbookstore.net.

The SteelDrivers at Chautauqua Auditorium: 7:30 p.m. Thursday, Chautauqua Auditorium, 198 Morning Glory Drive, Boulder. What began as a casual jam session over a decade ago has become a leader in the Americana bluegrass music world. Tammy Rogers, Michael Fleming, Richard Bailey, Brent Truitt, Matt Dame and Kelvin Damrell make up this folksy group. $35-$48, z2ent.com.

Upcoming

'Feeling the Autumn Within Me' art show: 5 p.m. Friday, Ana's Art Gallery, 1100 Spruce St., Suite 101, Boulder. The changing of the seasons, with summer turning into fall, is often a time of reflection. Milene Busutil attempts to capture this emotional transformation. Los Angeles artist Alison Rowley Jamele's artwork will also be featured. Free, 303-997-5346, anasartgallery.com.

'Proclaiming Colorado's Black History' exhibit opening: 5 p.m. Friday, Museum of Boulder, 2205 Broadway, Boulder. "Proclaiming Colorado's Black History" will give Coloradans and all visitors an inclusive understanding of the state's history by illuminating the stories of Black Coloradans who have lived in this area for the past two centuries. Learn about the contributions they have made to the Centennial State and the legacy they have left behind. $15-$20, 303-449-3464, museumofboulder.org.

Paws Party Game Night: 6 p.m. Friday, Purrfect Pause Cat Café, 5290 Arapahoe Ave., Unit E , Boulder. Enjoy a night of fun games and playful kitties. The café will have a variety of board games as well as JackBox TV. A portion of proceeds will go towards Front Range Freedom Rescue veterinary bills. $25, eventbrite.com.

JynxJazz Trio at BOCO Cider: 6 p.m. Friday, BOCO Cider, 1501 Lee Hill Drive, Unit 14, Boulder. JynxJazz is a trio from the streets of Boulder playing straight ahead jazz, funk and originals. The trio consists of Garret Cease on bass, Jim Kiser on trumpet, guitar and vocals and Julien Yeats on piano. Free, 720-938-7285, bococider.com.

Boulder Symphony at Boulder Theater: 7:30 p.m. Friday, Boulder Theater, 2032 14th St., Boulder. Boulder Symphony & Music Academy is dedicated to providing world-class, unique concerts that inspire and enrich the Boulder community. By sharing music, the group hopes to build a stronger, more connected community for all. Trace Bundy will also perform. $35-$50, z2ent.com.

Gimme Gimme Disco: 9 p.m. Friday, The Fox Theatre, 1135 13th St., Boulder. This DJ-based dance party plays classic ABBA tracks plus plenty of other disco hits from the 70s and 80s, like The Bee Gees, Donna Summer, Cher and more. $15-$20, z2ent.com.