There’s nothing quite like the decade best remembered for disco and double-knit polyester. It’s also when GORDON LIGHTFOOT established his reputation as a top-tier singer-songwriter. Relive such timeless classics as “If You Could Read My Mind,” “The Wreck of the Edmund Fitzgerald” and the beautiful “Sundown” at 8 p.m. tonight at the Cobb Energy Performing Arts Centre. Tickets range from $38 to $58. 404-249-6400. www.cobbenergycentre.com.