Marva Whitney was an American funk singer commonly referred to by her honorary title, Soul Sister #1. Whitney was considered by many funk enthusiasts to be one of the "rawest" and "brassiest" music divas.
Her most famous song is a response to the Isley Brothers' hit "It's Your Thing" titled "It's My Thing". This was famously sampled in "Bring The Noise" by Public Enemy, off their album It Takes a Nation of Millions to Hold Us Back, as well as in "Fuck tha Police" by the N.W.A.