Orange County Calendar of Events

Today

Musical event: “Fall Opera Scene” is a selection of well-known arias, duets and choruses. 8 p.m. Adults $10, students and seniors $5. Salmon Recital Hall at Chapman University, 1 University Drive, Orange. (714) 997-6871.

‘50s concert: Hi Hopes performs music of the ‘50s. $10. 7 p.m. Sisters of St. Joseph of Orange Auditorium, 480 S. Batavia St., Orange. (714) 778-4440.

Campaign money: The Orange Coast League of Women Voters sponsors a discussion of Proposition 89, which aims to curtail the influence of corporate campaign contributions and lobbying. $16. Marie Callender’s, 15363 Culver Drive, Irvine. (949) 400-2183

Flying paint: National Professional Paintball League Commander’s Cup includes teams from Japan, Norway, Sweden and France competing for $100,000. Fri.-Sat., 9 a.m.-6 p.m.; Sun. 8 a.m.-5 p.m. Free on Friday; Sat.-Sun. adults $5, children $2. Orange County Fairgrounds, 88 Fair Drive, Costa Mesa. (714) 708-1500.

Proposition debate: A symposium on eminent domain and debate on Proposition 90. Free. 1-7 p.m. Chapman Law School, 1 University Drive, Orange. (916) 448-5802.

Pre-Halloween event: Children can enjoy storytelling, face painting and more at the annual Halloween Haunt in the basement of the historic Bradford House. 136 Palm Circle, Placentia. 6:30-9 p.m. $4. (714) 993-2470.

Legend explored: The “Spooky Science Exhibit” explores the myth of the chupacabra, a small animal said to suck the blood of livestock. Adults $12.95, children and seniors $9.95. Through Nov. 5. Discovery Science Center, 2500 N. Main St., Santa Ana. (714) 542-CUBE or www.discoverycube.org

Early voting: Registered voters in Orange County can cast their ballots during the early-voting period, through Thursday. Weekdays 8 a.m.-5 p.m. Garden Grove City Hall, 11222 Acacia Parkway. (714) 567-7600. Other cities offering early-voting sites at city hall include Anaheim, Buena Park, Costa Mesa, Laguna Niguel and San Juan Capistrano. Call the registrar of voters, (714) 741-5040, for schedules and locations, or check www.ocvote.com

Saturday

Ragfest: The Orange County Ragtime Festival includes soloists, duos, orchestras and more, performing vintage and contemporary ragtime music. Saturday, 11 a.m.-5 p.m.; Sunday 12-5 p.m. $48 for weekend pass. Downtown Fullerton, 138 W. Commonwealth Ave. (714) 680-6684, (800) 690-6684 or www.ragfest.com

Lecture: “Eternal Renewal” explores the origins and functions of funerary bead nets worn by elite females in Old Kingdom Egypt. $7. 1:30 p.m. Bowers Museum, 2002 N. Main St., Santa Ana. (714) 567-3600.

Sunday

Fall fair: Enjoy live music, crafts and games at the Fall Fair & Pumpkin Patch. Environmental Nature Center, 1601 16th St., Newport Beach. 10 a.m.-3 p.m. (949) 645-8489.

Musical event: Concordia University’s Fall HymnFest 2006. $12, seniors and students $10. 3 p.m. Concordia University Center for Worship and the Performing Arts, 1530 Concordia West, Irvine. (949) 854-8002, Ext. 1526.

Vintage cars: Shop for parts, win prizes and explore a collection of Volkswagen buses from 1952 to 1967. 8 a.m. -1 p.m. $2; children under 12 free. Huntington Beach High School, 1905 Main St. (714) 374-7506.

Bridal event: The Bride World Expo includes wedding exhibits, a fashion show, cake samples and planning ideas. $10. 10 a.m.-4 p.m. Orange County Fair & Exposition Center, 88 Fair Drive, Costa Mesa. (714) 670-7800 or www.brideworld.com

Ongoing

Autumn fun: A pumpkin patch, tractor rides, haystacks, face painters and more are featured at Irvine Regional Park, Free. Sat.-Sun. 10 a.m.-5 p.m.; Mon.-Fri. 10 a.m.-4 p.m., through Oct. 31. 1 Irvine Park Road, Orange. (949) 724-6000 or ocparks.com

Oktoberfest: Old World Village celebrates with a six-week festival. Wed.-Thu., 6:30-10 p.m. (free admission); Fri.-Sat. for adults 21 and older, 7 p.m.-1:30 a.m. ($10); and Sun. for kids, 2-7 p.m. ($5, free for children younger than 12). Through Oct. 29. 7561 Center Ave., Huntington Beach. (714) 895-8020.

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The Orange County calendar is compiled by Yvonne Villarreal. Submit items two weeks in advance to ocdesk@latimes.com or by fax to (714) 966-7711.