High Street in Dunwoody has a free outdoor concert this evening from 7 to 9 p.m. The program is called World of Music, and it brings together the James Violin Studio Group and World Music USA for a mix of jazz, blues, rock and musical traditions from multiple cultures. The event's own page says no RSVP is required.
The setting is High Street Green, 101 High Street in Dunwoody, with food options available from onsite businesses. Outside food and drinks are not permitted, so plan around the venue's retailers if you want dinner. Unlike a crowded ticketed concert, this is a low-commitment way to discover a sound or performer you might not have chosen from a streaming playlist.
The weather forecast points to a clear but cooler evening. Bring a layer and arrive near the start if you want to choose a comfortable spot. The useful action is simply to go listen for half an hour and see what catches your ear.