Movie song
Sing a Simple Song
Sly & the Family Stone · 5:29
in Summer of Soul (...Or, When the Revolution Could Not be Televised), Sly Lives! (aka the Burden of Black Genius)
Listen to this song
Movies it plays in
On soundtrack albums
Soundtracks: MusicBrainz and Discogs (open data). Links: Deezer and Apple Music.