Few artists are as prolific as Lil Wayne, and the MC has often used his expansive catalogue to test hip-hop's boundaries. On the jazzy percussion of “Dr. Carter”, Weezy F Baby plays the role of the only medical practitioner skilled enough to save rap music from dying. “Trigger Finger”, meanwhile, finds his trademark croaky voice in full, fluid flow over strings that wouldn't sound out of place in a gory slasher flick.