"Didn't Cha Know?" Is The Second Single From Singer Erykah Badu's 2000 Album Mama's Gun. The Song Was Nominated For The Grammy Award For Best R&B Song For 2001. 1 "Didn't Cha Know?" Was Produced By Fellow Soulquarian Member J Dilla And Features A Sample From The Tarika Blue Recording "Dreamflower" Which Was Used Without Prior Permission From The Group. 1 A Settlement Fee Was Reached With The Group Outside Of Court. The Song Peaked At No. 28 On The R&B/Hip-Hop Chart. 2