"From the moment his music reached me in the early 1970s, it became a part of my soul," 'Sly Lives!' director Questlove also shared on Instagram.

Sly Lives!' filmmaker Ahmir "Questlove" Thompson pays tribute to his documentary subject Sly Stone, who died June 9: "Dared To Be Simple In Most Complex Ways"

Questlove calls the late Sly Stone, the subject of his doc 'Sly Lives: aka the Burden of Black Genius,' a 'giant' who 'will forever live' in a tribute