By mid-2000, Morales was overseeing production management at Goliath Artists, Inc., the management firm of music executive Paul Rosenberg. Morales helped Goliath Artists, Inc. expand clientele by heading the Producer Management division of the company, where he helped navigate the careers of artists such as DJ Muggs (Cypress Hill), Dame Grease, DJ Shock, The Beatnuts and The Alchemist. In 2001, Rosenberg and Eminem appointed him as Director of A&R at Shady Records
Morales also A&R'd the debut album from The Alchemist, 1st Infantry.
In 2003, Riggs helped introduce Reggaeton artist Tego Calderon when he requested Tego appear on a remix for 50’s hit single, “P.I.M.P.” Morales has been responsible for A&Ring albums which have sold 23 million copies.
In January 2004, Morales was voted number one A&R in the world by HitQuarters, a website that tracks the work of music executives..
A month later, Morales created the Free Yayo campaign for 50 Cent. Eminem wore a shirt promoting the campaign during his performance at the 2004 Grammy Awards.
In late 2008, Morales partnered with Razor & Tie to release projects under his Rigg’d Up label. The first release on Rigg’d Up will be the solo debut from hip-hop artist Black Thought of the Roots crew. The album is due out in the fall of 2009 and will feature production from DJ Premier, Salaam Remi and JR Rotem