That small structure in front of 1801 Congress near MLK is a 100-seat amphitheater with a lawn for additional seating. You can't have a proper music museum without a venue. A "spill out Cafe" will be adjacent to the amphitheater lawn. This is some excellent street interaction for state office building.
The mall construction is scheduled to start in 2019. This will be a cool area once the mall is finished.