Pittsburgh Ballet Theatre presents its free “Ballet Under the Stars” Aug. 16 at Hartwood Acres’ Middle Road Concert Area in Hampton Township, Allegheny County. “Ballet Under the Stars” begins at 5 p.m. with free family activities until 7 p.m. Food options will be available. The free mixed repertory performance at 7:30 p.m. will include an original new work by PBT’s principal dancer Yoshiaki Nakano. Visit pbt.org.