Questlove‘s directorial debut, Summer of Soul (…Or, When the Revolution Could Not Be Televised), won both the U.S. Grand Jury Prize and Audience Award for documentaries at this year’s Sundance Film Festival. The film revisits the 1969 Harlem Cultural Festival, also known as the Black Woodstock.

Summer of Soul features original footage from the festival that had sat unseen in a basement for 50 years, and showcases performances from icons like Stevie Wonder, the Staples Singers, Nina Simone, Mahalia Jackson, and Sly and the Family Stone.

“It has always been a dream of mine to direct films and telling this story has truly been an amazing experience,” Questlove shared. “I am overwhelmed and honored by the reception the film is receiving and want to give special thanks to Sundance, and my production partners: Radical Media, Vulcan Productions, Concordia, Play/Action Pictures and LarryBilly Productions.”

Watch Questlove talk more about Summer of Soul below.