Biggie Compares A Life Of Crime To A Life Of Rhyme As He Said In An Interview This Was His Favorite Song. Samples The Guitar Part Is From "Something Extra" By Black Heat And The Hook Is From Chief Rocka By Lords Of The Underground With Backing Vocals From "Up For The Down Stroke" By Fred Wesley And The Horny Horns Due To An Uncleared Sample Use “Up For The Down Stroke” No Longer Plays Underneath The Vocal. Hear The Original And The Update. The Old Sample Begins Around The 52 Mark.