Grammy-nominated hip-hop artist J.Cole just might let it all go to his head with the No. 1 hit single “Power Trip,” off his June album “Born Sinner.” J.Cole, who led a lecture at Harvard earlier this year, hits Duval for the fifth show in a 30-city tour. Wale, whose June album release “The Gifted” debuted at No. 1 on the Billboard charts, opens. 8 p.m. Sept. 14, Times-Union Center for the Performing Arts, 300 W. Water St., Downtown, $39.50-$65, 633-6110, jaxevents.com.