Serena Williams Gets Ready for the US Open By Singing Karaoke by African Celebs August 22, 2014 African Celebs Defending US Open champion Serena Williams joined Delta Air Lines at the “Delta OPEN MIC” at the Arena in Times Square in New York City. Williams, a karaoke-enthusiast, is known to relax by picking up the microphone before she picks up the racket. See Also Happy Birthday To Regina Daniels Birthday Tags Delta OPEN MIC Karaoke New York City Serena Williams Times Square