Happening this weekend: Music at Getty Center, the Groundlings, etc.

MUSIC

Los Angeles Free Music Society Get in on the free Saturday-night activities at the Getty with experimental-music rebels Los Angeles Free Music Society. The group embraces off-beat music, lo-fi noise rock and DIY culture. The evening’s performances include Extended Organ, Le Forte Four and Tom Recchion. Getty Center, Harold M. Williams auditorium, 1200 Getty Center Drive, L.A. 7:30 p.m. Free. Reservations required, (310) 440-7300. https://www.getty.edu.

COMEDY

The Groundlings Humor and holidays collide with an evening of good tidings, sketches and improv thanks to a merry bunch of Groundlings. Director Jim Rash (“Community”) is joined by a cast of screen and stage talents including Jillian Bell (“Workaholics”), Andrew Friedman (“The Big C”), Ryan Gaul (“2 Broke Girls”), Charlotte Newhouse (“Fanboy”), Steve Little (“Eastbound & Down”), Lisa Schurga (“Leverage”) and Alex Staggs (“Modern Family”). Expect plenty of holiday chaos and cheer. Groundlings Theatre, 7307 Melrose Ave., Los Angeles. 8 and 10 p.m. Sat. 8 p.m. Fri. Through Dec. 17. $20. (323) 934-4747. groundlings.com.

EVENTS

Harvest Festival Original Art & Craft Show Boasting an array of more than 24,000 unique handmade items at affordable prices, the show — the West Coast’s largest indoor craft show — features more than 200 exhibitors, live entertainment, strolling performers, a kids zone, specialty foods and more. Pomona Fairplex, 1101 W. McKinley Ave., Pomona. Sat.-Sun. $9. https://www.harvestfestival.com.

FAMILY

Irvine Park Railroad’s Christmas Train Historic Irvine Regional Park’s festive holiday train will depart from the brightly lighted train station and drop off passengers at the North Pole. Kids will have an opportunity to share their wish lists with St. Nick and pose for photos. Irvine Park Railroad, 1 Irvine Park Road, Orange. 5-8 p.m. Fri.-Sun. Through Dec. 23. Train tickets $10, children, 2 and younger free. Activity tickets, $4 each. Book of 15 activity tickets, $50. (714) 997-3968. https://www.irvineparkrailroad.com.

MUSIC

KIIS Jingle Ball Pop radio takes a victory lap with a round table of dance-friendly hit makers, including David Guetta, Lady Gaga, Sean Paul and other FM staples. Bring earplugs for all the screaming. Nokia Theatre, 777 Chick Hearn Court, L.A. 5:30 p.m. $80.25-$150.25. nokiatheatre.com.