Sid 'Uncle Jamz' Johnson is an American songwriter, producer and personal manager.
He co-wrote Midnight Star's early 1980s ballad "Slow Jam", and The Deele's "Two Occasions" (for which he received a BMI award) with Babyface.
He has co-written, produced or executive produced, Billboard charting singles for Manchild, The Boys, Shalamar, The Mac Band, Dynasty, Renaizzance, Next, Field Mob and Suthern Klick, plus album tracks for Babyface, Midnight Star, Ron Banks of The Dramatics, Usher and Monica, The Whispers and Field Mob, plus the Soul Food (soundtrack).
He also does entertainment consultation for various acts and is aided by his assistant Charles Suttice.
Additionally he partners with music producers DJGuyWes, E-Bo and Nut Bush.