Concerts COLLEGE OF SOUTHERN MARYLAND CHOIRS -- The Concert Choir and Chamber Choir are on tour, 7 p.m. Saturday at Mudd House, 3725 Dr. Mudd Road, Bryantown; 3 p.m. Sunday at All Saints Episcopal Church, Routes 2 and 4, Sunderland; 7:30 p.m. Wednesday at Church of Christ, 30 Village St., Waldorf; and more, through Dec. 18. Free. 301-934-7828, 301-870-3008, 301-934-7788 (TDD) or www.csmd.edu/events/finearts/index.

ST. MARIES MUSICA -- The group performs 7:30 p.m. Monday at St. Aloysius Catholic Church, 22800 Washington St., Leonardtown, and 7:30 p.m. Dec. 16 at Patuxent Presbyterian Church, 23421 Kingston Creek Rd., California. Free. 301-737-4365.

CALVERT MADRIGAL DINNER -- 5:30 p.m. Saturday. Reservations are required for a madrigal dinner presented by Eclatant. Calvert High School, 600 Dares Beach Rd., Prince Frederick. $10. 410-535-7351 or 410-586-0723.

SHANNON SALYARDS -- 4 p.m. Sunday. Christ Church Concerts continues with a program of soprano solos with Angela Garvey on organ and piano. Christ Church, 110 E. Charles St., La Plata. Donations welcome. 301-934-2360.

CHAMBER ORCHESTRA OF SOUTHERN MARYLAND IN CONCERT -- 3 p.m. Sunday. Seasonal music by COSMIC. St. Mary's Ryken High School Performing Arts Center, 22600 Camp Calvert Rd., Leonardtown. $8; seniors and students, $7; families, $16. 301-373-5277 or 301-994-0221.

YOUTH AND MUSIC MINISTRIES OF METROPOLITAN -- 4 p.m. Sunday. A "Christmas Celebration in Song" includes "Come, Let Us Worship the King" and a children's presentation. 3385 Metropolitan Church Rd., Pomonkey. Free. 301-283-3341.

CHESAPEAKE CHORALE -- 6:30 p.m. Sunday. The chorale presents a Christmas concert. Emmanuel Baptist Church, 3800 Old Town Rd., Huntingtown. Free. 301-855-8686 or 410-257-9188.

BRIAN GANZ -- Noon Monday. Faculty member Brian Ganz plays a piano recital. St. Mary's Hall, St. Mary's College of Maryland, 18952 E. Fisher Rd, St. Mary's City. Free. 240-895-4380 or 240-895-2095.

SMR BAND AND CHOIR -- 7 p.m. Tuesday. Enjoy Christmas music performed by students of St. Mary's Ryken High School. St. Mary's Ryken, 22600 Camp Calvert Rd., Leonardtown. Free. 800-270-0155, Ext. 475.

Dance AQUA SQUARE DANCING -- 7:30-9:30 p.m. every Friday. The Aqua Squares Square Dance Club of Calvert County holds a dance at the Southern Community Center, 20 Appeal Lane, Lusby. $5. 410-326-2676 or 301-373-2207.

MERRY-LANDERS SQUARE DANCING -- 7:30-9:30 p.m. every Friday. Dances are held by square dance club the Southern Merry-Landers, at John Hanson Middle School, 12350 Vivian Adams Rd., Waldorf. $5.50; members, $4. 301-893-1974.

Exhibits HOVANEC HANDBLOWN GLASSWORKS -- 4-8 p.m. tomorrow, 10 a.m.-6 p.m. Saturday and Sunday. An open house includes glassblowing demonstrations, an exhibit and sale of works by Jerry Hovanec and Ruthann Uithol. Hovanec Handblown Glassworks, T. Rayner Wilson Blacksmith Shop, 9610 H.G. Trueman Rd., Lusby. Free. 410-326-1647.

RAKU POTTERY -- 10 a.m.-5 p.m. Saturday and Sunday. Visit a working pottery studio and enjoy holiday treats. Firing demonstrations at 2 p.m. both days. Bring a canned food item to donate to HOPE's food pantry. Sarah Houde Pottery, 44035 Drum Cliff Rd., Hollywood. Free. 301-373-2297.

MAIN STREET OPEN HOUSE -- 11 a.m.-5 p.m. Saturday. See fine contemporary arts and crafts on display. Main Street Gallery, 486 Main St. Prince Frederick. Free. 410-535-3334.

DOLL AND TRAIN EXHIBIT -- Noon-4 p.m. Wednesdays-Sundays, through Jan. 4. Head for the Little Red Schoolhouse on the museum's grounds for your fill of trains and dolls, or stroll through the museum proper for an abundance of teddy bears. An informative exhibit about President Theodore Roosevelt celebrates the teddy bear's 100th anniversary. Children will be offered a special treat if they can correctly guess the number of bears on display. St. Clement's Island-Potomac River Museum, 38370 Point Breeze Rd., Colton's Point. $1. 301-769-2222.

CHRISTMAS SHOW AND SMALL PACKAGES -- 11 a.m.-6 p.m. Wednesdays-Saturdays and 11 a.m.-3 p.m. Sundays, through Dec. 24. The main gallery hosts the 16th annual Christmas All-Member Show, while the Mulberry Fields Room is devoted to works 8-by-10-inches or smaller. North End Gallery, 41625 Fenwick St., Leonardtown. Free. 301-475-3130 or www.northendgallery.org.

MAIN STREET GALLERY'S 11TH YEAR -- 11 a.m.-5 p.m. Wednesdays-Fridays and 11 a.m.-4 p.m. weekends, Saturday through Dec. 23. "Spirit, Creativity and Surprise" features works by Parran Collery, Yvonne Creighton, Fanchon, Jerry Hovanec, Bo Jia, Diana Marta, Ruthann Uithol and others. Main Street Gallery, 486 Main St. Prince Frederick. Free. 410-535-3334.

20 YEARS OF CARMEN'S -- 10 a.m.-5 p.m. Tuesdays-Saturdays and 11 a.m.-3 p.m. Sundays, through Christmas. All gallery artists have been invited to submit one new work especially designed for this anniversary exhibition. Carmen's Gallery, Dowell Road, Solomons. Free. 410-326-2549 or www.carmensgallery.com.

CARLTON FLETCHER -- Noon-5 p.m. Mondays and Wednesdays; 3:30-7 p.m. Tuesdays, Thursdays and Fridays; and an hour before CSM performances, through Jan. 26. A retrospective of drawings and paintings by Carlton Fletcher. Tony Hungerford Memorial Gallery, College of Southern Maryland, 8730 Mitchell Rd., La Plata. Free. 301-934-7828, 301-870-3008 or 301-884-8131, Ext. 7828.

HOLIDAY SHOW AND SALE -- 11 a.m.-4 p.m. Fridays-Sundays, through Dec. 15. Various artists represented. Mattawoman Creek Art Center at Smallwood State Park, Sweden Point Road, Marbury. Free. 301-743-5159 or www.mattawomanart.org.

For Children YOUNG SALTS -- 10 a.m. and 1 p.m. Saturday. Presentation plus snack and craft for children ages 4-6. Calvert Marine Museum, Route 4, Solomons. $10; members, $8. Advance registration required. 410-326-2042, Ext. 45 or www.calvertmarinemuseum.com.

BREAKFAST WITH SANTA -- 9-11 a.m. Sunday. Santa makes an appearance by boat and his elves make balloons. Children can sit on Santa's lap and receive a free gift. Buffet breakfast. Rod 'N' Reel Restaurant and Marina, Route 261 and Mears Avenue, Chesapeake Beach. $12.95; children 5-10, $6.95; 4 and younger, $1.95. 410-257-2735, 877-763-6733 or www.rodnreelinc.com.

Lectures and Literature FOUR JUDGES ON JUDGING -- 7:30-8:30 p.m. today. Four judges participate in a round-table discussion on the state of the American judicial system. A reception follows. Cole Cinema, St. Mary's College of Maryland, 18952 E. Fisher Rd, St. Mary's City. Free. 240-895-4381.

ANTHROPOLOGY LECTURE -- 4:30 p.m. today. Christine Eber from New Mexico State University talks about her recent field work in Chiapas, Mexico. St. Mary's Hall, St. Mary's College of Maryland, 18952 E. Fisher Rd, St. Mary's City. Free. 240-895-4380 or 240-895-2095.

"CONNECTIONS" -- 7:30 p.m. tomorrow. Local writers will read their original works published in the fall 2002 issue of "Connections." Center for Business and Industry, rooms 103/104, College of Southern Maryland, La Plata campus, 8730 Mitchell Rd. Free. 301-934-7828, 301-870-3008, 301-884-8131, Ext. 2828 or BxOffc@csmd.edu.

MARIO LIVIO -- 4:40 p.m. Wednesday. A guest lecturer from the Space Telescope Science Institute discusses "The Golden Mean." Schaefer 106, St. Mary's College of Maryland, 18952 E. Fisher Rd, St. Mary's City. Free. 240-895-4380 or 240-895-2095.

FOOD, FAMILY AND FILM -- 7-8:30 p.m. Wednesday. Eat and discuss the films "Eat Drink Man Woman" and "Tortilla Soup" with anthropologist/sociologist Tim Brown. Register in advance. Calvert Library, 30 Duke St., Prince Frederick. Free. 410-535-0291 or 301-855-1862.

BILL GERTZ -- 7:30 p.m. next Thursday. Bestselling author and Bowie resident Gertz discusses and signs "Breakdown: How America's Intelligence Failures Led to September 11." Borders, 3304-A Crain Hwy., Waldorf. Free. 301-705-6672.

Sports and Recreation FIELD TRIP -- 10 a.m.-4 p.m. the first Sunday of the month. Eradicate alien invasive plants from most of the old growth area of Chapman's Forest. Participating organizations include the Maryland Native Plant Society and Sierra Club. Bring gloves, lunch and water. Meet at Swann Park/Potomac Branch Library, Indian Head Highway, Indian Head. Free. 301-283-0808 or ialm@erols.com.

Theater "AMAHL AND THE NIGHT VISITORS" -- 2 and 7 p.m. Saturday and 2 p.m. Sunday. The Theatre Company at the College of Southern Maryland presents Gian Carlo Menotti's classic opera about a stop the Three Kings make on their way to Bethlehem, where a young crippled boy and his mother offer the travelers a place to sleep. Fine Arts Center Theatre, College of Southern Maryland, La Plata campus, 8730 Mitchell Rd. $12; students, seniors and children, $10. 301-934-7828, 301-870-3008, 301-884-8131, Ext. 7828, or www.csmd.edu.

"A CHRISTMAS CAROL" -- 8 p.m. Fridays and Saturdays, 3 p.m. Sundays, through Dec. 15, plus 3 p.m. Dec. 14. Port Tobacco Players present the Dickens classic. Port Tobacco Players Theatre, 508 Charles St., La Plata. $12; seniors and students, $10. 301-932-6819.

TWIN BEACH PLAYERS -- 7:30 p.m. tomorrow-Sunday. Calvert County Cultural Arts Council sponsors performances of "The Littlest Angel" and "The Gift of the Magi." Surfside South at Herrington Harbour, 2153 Lakeshore Drive, Rose Haven. $15; in advance, $12; seniors, $10; students K-12, $5. budthecat@chesapeake.net.

Miscellaneous HANGING OF THE GREENS -- 1-3 p.m. today. Calvert Garden Club puts up greens as a Christmas gift to Calvert County. Courthouse Square, Prince Frederick. Free. 410-326-3776 or 410-257-5081.

HOLIDAY FESTIVAL -- 6-9 p.m. tomorrow and Saturday. The festival features visits with Santa, live music, hot cider and cookies. Solomons United Methodist Church, 14454 Solomons Island Rd. South, Solomons. Free. 410-326-3848.

ANTIQUES OPEN HOUSE -- 4-8 p.m. tomorrow; 10 a.m.-5 p.m. Saturday and Sunday. A Christmas open house features demonstrations and refreshments. Southern Maryland Antiques Center, Route 4, Huntingtown. Free. 410-257-1677 or 301-855-6865.

FIRST FRIDAY LAB TOURS -- 10-11 a.m. and 2-3 p.m. tomorrow, the Academy of Natural Sciences gives guided tours of their laboratory facilities; 9-10 a.m. and 1-2 p.m. tomorrow, the Maryland Archaeological Conservation Laboratory gives tours of their facility. Please register in advance. Jefferson Patterson Park & Museum, 10545 Mackall Rd., St. Leonard. Free. Academy of Natural Sciences tours, 410-586-9700 or www.anserc.org.; Maryland Archaeological Conservation tours, 410-586-8550.

HUMANE SOCIETY BAZAAR -- 9 a.m.-3 p.m. Saturday. Crafts, white elephants, collectibles and baked goods available from the Humane Society of Charles County, Industrial Park Drive, St. Charles. Free. 301-645-8181.

PLANTATION CHRISTMAS -- 11 a.m.-4 p.m. Saturday and Sunday. Enjoy children's activities, a holiday hunt, merchants, live seasonal music and Christmas treats. Sotterley Plantation, 44300 Sotterley Lane, Hollywood. $7; children ages 3-12, $3; under 3, free. 301-373-2280 or 800-681-0850.

CHRISTMAS ON THE BEACH -- 3-6 p.m. Saturday. North Beach hosts a tree-decorating and lighting ceremony with Santa, caroling, yule logs and refreshments. North Beach Waterfront. Free. 301-855-6681.

COLONIAL CHRISTMAS -- 1-7 p.m. Sunday. Costumed docents offer tours (candlelight after dark) of Smallwood's Retreat House, decorated in 18th-century holiday style. There will also be open-hearth cooking demonstrations and holiday treats. Smallwood State Park, 2750 Sweden Point Rd., Marbury. Free. 301-743-7613.

HOLIDAY OPEN HOUSE -- 1-5 p.m. Sunday. Make an evergreen wreath or holiday ornaments and go on a hayride. Refreshments provided. Kings Landing Park, Kings Landing Road, Huntingtown. Free. 410-535-5327 or 800-735-2258 (TDD).

HOLIDAY FESTIVAL AND CRAFT FAIR -- 6-9 p.m. Tuesday. Indian Head hosts a festival with live entertainment, displays, merchants and refreshments. Village Green Pavilion, Indian Head Highway, Indian Head. Bring a canned good donation. 301-743-5574.

DEAF CHRISTMAS SOCIAL -- 6:30-9:30 p.m. Tuesday. Reserve by today for a dinner get-together sponsored by the Southern Maryland Deaf Community. There will be door prizes and 50/50 drawings. Golden Corral Restaurant, Crain Highway, Waldorf. Meal prices vary; no cover. 301-932-4578 (fax), 301-705-5204 (TTY), or advocacy2002@yahoo.com.

Plan Ahead CANDLELIGHT TOURS OF SOTTERLEY -- 6-9 p.m. Dec. 13 and 14. Step back to a 1791 Christmas on a candlelight tour with homemade cookies, hot wassail and live seasonal music. Reservations are required. Sotterley Plantation, 44300 Sotterley Lane, Hollywood. $10; groups of 20 or more, $8. 301-373-2280 or 800-681-0850.

GARDEN IN LIGHTS-6-9 p.m. Dec. 13-Jan. 1. Drive through light displays at Annmarie Garden, Dowell Road, Solomons. Donate one nonperishable food item. 410-326-4640 or www.annmariegarden.org.

-- Carrie Donovan

The Southern Maryland Extra Entertainment Calendar lists events as space permits. Mail announcements and photos -- noting date, time, address, cost and phone number -- to Carrie Donovan, Southern Maryland Extra, The Washington Post, 1150 15th St. NW, Washington, D.C. 20071. You may also e-mail announcements to donovanc@washpost.com or fax them to 202-334-5417. Deadline is 14 days before publication.