DJ Cassidy DJ Cassidy, whose star-stuffed DJ sets provided some joy during a difficult 2020, brought his Pass the Mic series – which finds a musical legend performing a signature hit before virtually passing the mic to another icon – to the online concert celebrating the 2021 Presidential Inauguration of Joe Biden on Wednesday (June 20). He started out by queueing up Earth, Wind & Fire to virtually deliver "Sing a Song" before segueing to Nile Rodgers and Kathy Sledge, who led a massive sing-along to Sister Sledge's "We Are Family" with the Trans Chorus of Los Angeles, the Washington Chorus and the Triumph Baptist Church Choir.