Caltech and the Pasadena Playhouse present “MACH 33: The Caltech/Pasadena Playhouse Festival of New, Science Driven Plays,” staged readings of new, unpublished plays exploring scientific, mathematical and technological questions, at 7 p.m. Thursday through Saturday at the Pasadena Playhouse, 39 S. El Molino Ave., Pasadena. Tickets are $15 general admission, $10 for Playhouse members and students. Call (626) 356-7529 or visit pasadenaplayhouse.org.
Caltech Chamber Music Ensembles perform works by Telemann, Mozart, Fauré, Shostakovich and Saint Saëns starting at 8 p.m. Friday and 3:30 p.m. Sunday at Caltech’s Hameetman Center/Frautschi Music Room, 1200 E. California Blvd., Pasadena. Free. Call (626) 395-3295 or visit events.caltech.edu.
The Travel Expo, a consumer-focused show showcasing cultures, experiences and people from around the world, runs from 10 a.m. to 6 p.m. at the Pasadena Convention Center, 300 E. Green St., Pasadena. Admission is $15 per person, two for $19 or family passes for three for $24. Call (626) 793-2122 or visit visitpasadena.com/events/travel-expo/.
The Los Angeles Children’s Chorus, led by Artistic Director Fernando Malvar-Ruiz, performs a Spanish language version of “Ave Mari” by Henry Mollicone, Michael Bojesen’s “Gloria,” and works by Pergolesi and Mark Hayes. It starts at 7 p.m. at Pasadena Presbyterian Church, 585 E. Colorado Blvd., Pasadena. Tickets are $27 to $46. Call (626) 793-4231 or visit lachildrenschorus.org.
Thomas Allbaugh, author of the dark humor novel “Apocalypse TV,” and Dahlia Schweitzer, author of “Going Viral: Zombies, Viruses and the End of the World,” present two views of apocalypse anxiety in the 21st century starting at 7 p.m. at the Pasadena Public Library’s Central Branch, 285 E. Walnut St., Pasadena. Free. Call (626) 744-4066 or visit pasadenapubliclibrary.net.
J.C. Hyke’s Songwriter Serenade features Ric Taylor, Pat Nason, Tim Tedrow, Emanuela Bellezza and Tieg at 7 p.m. at Matt Denny’s Ale House Restaurant, 145 E. Huntington Drive, Arcadia. No cover. Visit jchyke.com.
Painting with Nan Rae runs from 11 a.m. to 3 p.m. each Wednesday at the Huntington Library, Art Collections and Botanical Gardens, 1151 Oxford Road, San Marino. Newcomers are welcome. Cost is $50 per session. Call (818) 842-6489 to register and visit huntington.org for information.
R&B artist King James Brown performs his dynamic James Brown tribute show at The Rose, 245 E. Green St., Pasadena. Doors open at 6 p.m. and music starts at 7:15 p.m. Tickets are $25. Call (888) 645-5006 or visit wheremusicmeetsthesoul.com.