7 p.m. – Gwen Hughes & The Retro Jazz Kats heat up the stage at the upcoming Concerts by the Springs event. Free and open to the community. No pets. Picnic baskets, coolers and blankets are welcome; no outside tables. Additional food and beverages available for purchase. No smoking. Heritage Green, on the Sandy Springs Entertainment Lawn, 6110 Bluestone Rd., Sandy Springs, 30328. Questions? Visit: www.heritagesandysprings.org, call: 404-851-9111, ext. 4 or email: information@heritagesandysprings.org. To learn more about the band, go to: www.retrojazzkats.com.