Olanrewaju Ogunmefun, better known by his stage name Vector, is a Nigerian rapper and songwriter. He has released three studio albums, including the State of Surprise and The Second Coming (2012). In anticipation of his second studio album, he released a mixtape titled Bar Racks. “Lafiaji” which was released in December 2016. He also released a mixtape in October 2018, “The Rap Dialogue” in an effort to keep the spirit of Nigerian hip-hop alive.