Martinis & Music.  Celebrate art exhibits, volunteers, sponsors and community involvement with music.  5:30-8:30pm.  $8 includes hors d’oeuvres and cash bar.  Free admission for members.  Marietta/Cobb Museum of Art, 30 Atlanta Street, Marietta.  More info:  770-528-1444 or www.mariettacobbartmuseum.org.