Charles Hamilton is no stranger to freestyling. The Harlem-bred MC has proven countless times that he can spit off the time and go for long stretches of time. In 2010, Hamilton showcased his freestyling skills for XXL and went on for a solid 27 minutes.

While the songs on his new The Black Box EP have cohesive elements ("Face the Music," "Crayola"), everything is fair game when it comes to his freestyles. Today, he'll attempt to beat his previous 27-minute freestyle record in our studio. Hip-hop fans, here's where you come in. Head to Twitter and tweet @XXL some topics for Charles Hamilton to rap about using the hashtag #CharlesBars. Check back here at 2:30pm to watch it all go down live and cop the rhymer's The Black Box EP here.