NEW YORK (AP) â Remy Ma, George Clinton and KRS-One are among the headliners of a series of free concerts next month meant to celebrate New York City's emergence from the coronavirus pandemic, Mayor Bill de Blasio announced Thursday. Proof of COVID-19 vaccination will be required for the âItâs Time for Hip Hop in NYCâ concerts taking place at outdoor venues in the Bronx, Staten Island, Brooklyn and Queens starting Aug. 16. While a previously announced Aug. 21 Central Park concert will feature performers across multiple genres, the four concerts outside of Manhattan will focus on hip-hop, âand particularly New York Cityâs essential historic contribution to hip-hop and what each borough has contributed,â de Blasio said at a virtual news briefing.