• AUTHOR VISITS The Arts & Education Council presents "An Evening With Jon Meacham," 6:30-8:30 p.m. today at Lindsay Street Hall, 901 Lindsay St. The Pulitzer Prize winner will discuss and sign copies of his new book, "Thomas Jefferson: The Art of Power." Admission: $50 to $100, which includes copy of the book. 267-1218.

• DUBSTEP ARTIST British dubstep DJ/producer Chris Mercer, aka Rusko, performs at 9 p.m. today at Track 29, 1400 Market St. Admission: $25 and $28. 521-2929.

• ORCHESTRA MUSIC The UTC Orchestra, with guest conductor Daemyung Cho and guest pianists Sylvia Hong and Michael Rector, performs at 7:30 p.m. in the Roland Hayes Concert Hall in the UTC Fine Arts Center, 752 Vine St. Free admission. 425-4601.

• OPERA SCENES Opera Theatre students at Chattanooga State Community College, 4501 Amnicola Highway, present popular opera scenes at 7:30 p.m. today in the Humanities Theatre. Free; donations accepted. 697-3246.

• NAVY SPEAKER Phil Dunmire, president of the Navy League of the United States, is guest speaker for the NLUS Greater Chattanooga Council's quarterly meeting at 6 p.m. today at the Chattanooga Choo Choo Hotel, 1400 Market St. 326-0839.