MUSIC MATTERS SHOWCASE-- 7-10 p.m. Saturday. Acoustic performances by Eileen Bernstein, Scott Maddasion and Matt Rodela. Mad City Columbia, 10801 Hickory Ridge Rd., Columbia. Free; donations to the homeless accepted. 410-964-8671 or http:/
BSO CHAMBER CONCERT-- 8 p.m. Saturday; pre-concert lecture, 7:15 p.m. Members of the Baltimore Symphony Orchestra perform works by Benjamin Britten, Wolfgang Amadeus Mozart, Maurice Ravel and Johannes Brahms with tenor Thomas Poole of the New York City Opera and the San Francisco Opera as part of the Unitarian Universalist Chalice Concert Series. Performers will include Mary Bisson, horn; Qing Li, violin; Thomas Poole, tenor; and Michael Adcock, piano. Owen Brown Interfaith Center, 7246 Cradlerock Way, Columbia. $20; students, $12; younger than 12, free with adult. 410-381-0097 or http:/
"HORSE SENSE"-- 11 a.m.-5:30 p.m. weekdays and 9:30 a.m.-12:30 p.m. Saturdays through Oct. 26; reception, 6-8 p.m. tomorrow. Rana Geralis, a former Laurel racecourse employee, shares her love of horses in an exhibit of pastels, oils, charcoal and graphite images depicting horses in motion, opening Saturday. Artists' Gallery, 10227 Wincopin Cir., Columbia. Free. 410-740-8249.
ALBERT SANGIAMO-- 10 a.m.-8 p.m. today and tomorrow; 10 a.m.-5 p.m. Saturday. A retrospective of 88 drawings and paintings from 1960 to the present. Howard Community College, Rouse Company Foundation Gallery and the Art Department Gallery, Horowitz Center for Performing Arts, 10901 Little Patuxent Pkwy., Columbia. Free. 410-772-4189.
CHEN, WEINER-REED AND HAUCK-- 9 a.m.-9 p.m. today, 9 a.m.-5 p.m. tomorrow and 9 a.m.-2 p.m. Saturday. Watercolors and mixed media by Jing-Jy Chen, Elaine Weiner-Reed and Robert Hauck. Slayton House Gallery, Wilde Lake Village Green, Columbia. Free. 410-730-3987 or 301-596-4883.
AFRICAN AMERICAN FAMILIES-- 10 a.m.-4 p.m. Mondays-Fridays and 1-4 p.m. Saturdays, through next Thursday. A photo exhibit, "Native African American Families of Howard County, Maryland," presented by the Howard County Center of African American Culture and Howard Community College, includes more than 300 photos taken between 1875 and 1950. Howard Community College, Room L220, James Clark Library, 10901 Little Patuxent Pkwy., Columbia. Free. 410-772-4002, http:/
DAVID ASHMAN-- 11 a.m.-7 p.m. today and tomorrow. Black-and white-photographs, f64 Photography Gallery, 8289 Main St., Ellicott City. Free. 410-480-9004 or http:/
"TRANSITION AND TRANSFORMATION"-- 8 a.m.-7 p.m. Mondays-Thursdays, 8 a.m.-5 p.m. Fridays, and weekends by appointment, through Dec. 1. Nature photographs by Walter Hayley. Himmelfarb Gallery, Tai Sophia Institute, 7750 Montpelier Rd., Laurel. Free. 410-888-9048.
HOWARD COUNTY ARTS-- 10 a.m.-8 p.m. weekdays, 10 a.m.-4 p.m. Saturdays, and noon-4 p.m. Sundays, through Oct. 19. A juried show by artists from the Maryland Art Education Association, and "Relying on Memories," with landscapes by Michael Farrell and the late Edda Jakab. Howard County Center for the Arts, 8510 High Ridge Rd., Ellicott City. Free. 410-313-2789 or http:/
"A FLORAL POTPOURRI"-- 7 a.m.-8 p.m. weekdays and 8 a.m.-8 p.m. Saturdays, through Nov. 2. Asian-style floral watercolors by botanical illustrator Peggy Duke. Lakeside Cafe and Deli, American City Building, 10227 Wincopin Cir., Columbia. Free. 410-772-3694.
"A JOURNEY FROM ROAD TO RAILS"-- 11 a.m.-4 p.m. Wednesdays-Sundays, through Nov. 4. A look at the impact of industrialization as transportation changed in the Ellicott City area. B&O Railroad Museum, 2711 Maryland Ave., Ellicott City. $5; seniors 60 and older, $4; children ages 2-12, $3. 410-461-1945 or http:/
"40 GREAT YEARS AND MORE!"-- 10 a.m.-5 p.m. weekdays, through December. Local landscapes by photographer Denee Barr and artist Alice Webb, sponsored by the Columbia Foundation. The exhibition includes mixed-media photographs, watercolors, etchings and giclee prints. Columbia Foundation office, American Cities Building, 10227 Wincopin Cir., Columbia. Free. 410-730-7840.