Early yesterday morning, Meek Mill revealed to the world that Drake's verse on "R.I.C.O." was co-written by a guy named Quentin Miller. Jaws dropped, twitter exploded, and many debated whether Drake was still eligible for "best rapper" status. Really though, it wasn't truly a "reveal," as Miller's name appeared on the song's credits in the DWMTM packaging. Going beyond that, the outrage Meek prompted seemed a little exaggerated when you consider that A) Drake's had help writing his songs for his entire career, and B) he's far from the first respected rapper to do so. 

Miller's work for Drake isn't technically "ghostwriting," as he is credited by name on tracks he contributed to, but the term has come to encompass any verses rapped by someone who didn't write them on their own. The practice of ghostwriting is, by this point, a time-honored tradition in hip hop, but one that inevitably sparks controversy whenever it comes up in conversation. There's undoubtedly tons of ghostwriting that goes on behind the scenes that we'll never hear about, and oftentimes the accusations are unsubstantiated by actual evidence (like Gillie The Kid's claim that he wrote most of Lil Wayne's Tha Carter or the prevalent rumor of Young Chris' role in Jay Z's career).

There are, however, some pretty believable instances of highly-regarded lyricists enlisting more unknown artists to pen bars for them. It is more common for pop-minded artists like Will Smith, Iggy Azalea and Bow Wow to do so, but here, we're looking to highlight the absolute biggest, most revered names who've benefitted from ghostwriting. Not every example can be definitively proven, but we're going off more than just a bit of conjecture.