On April 25, 2002, Lopes was killed in a car crash, leaving behind material that she had recorded for both "N.I.N.A." and "3D". Watkins and Thomas decided to use three of Lopes' newly recorded raps for the album ("Quickie", "Girl Talk", and "Who's It Gonna Be?"), the other songs that feature her in it were unreleased acappellas from her "Supernova" and "N.I.N.A." album sessions. The unreleased vocals were featured on the songs "Quickie", "Over Me" and "Give It to Me While It's Hot".