Producer Teddy Riley says there's more to come from the archives
Lenny Kravitz and 50 Cent also appear on 'Michael'
Joe Jackson adds pharmacy owners as defendants in case
Lawyer outlines measures taken to ensure authenticity
Randy Jackson joins nephews in slamming Sony Music
Singer argues new record will keep Jackson's legacy alive
First single from 'Michael' album features Akon on vocals
50 Cent, Lenny Kravitz and Akon feature on album
Sony Music counters claims from Jackson's family that his vocals aren't legitimate