When used properly, ad-libs can really accelerate the popularity of an artist. Just ask Big Sean or 2 Chainz. These between-the-lines phrases are designed to hype up listeners, adding extra energy to their verses.
T-Pain is known to create twerk-worthy/club-worthy anthems. His latest hit record, "Up Down," being a prime example of this. The auto-tuned rapper hit up Hot 97 for a lengthy interview, where he discusses his strip club addiction.