Yesterday I was hanging in the studio with Jim Jonsin, the local producer extraordinaire who produced two of the biggest hip-hop tracks of the year, Lil Wayne's "Lollipop" and T.I.'s "Whatever You Like." We were basically chopping it up about music, the industry, his upcoming five Grammy nominations, his production methods, and all sorts of stuff. He's definitely a cool guy. So I asked him what beat he thought really propelled his career in the right direction and he mentioned "Let's Go,