Old school hip hop heroes

Some serious tune with some old loop that on one ever uses.

it's "Unwind Yourself" by Marva Whitney

used for;

 Chad Jackson - "Hear the Drummer Get Wicked"
 DJ Kool - "Let Me Clear My Throat"
 DJ Mark the 45 King - "The 900 Number"
 LA Funk Mob - "La Doctoresse"
 Stetsasonic - "Do You Remember This?"
 Vanilla Ice - "Go Ill"
 Yo, MTV Raps! - "Theme"