Nigerian heavyweight singer, Wande Coal collaborates with heavyweight music producer, Sarz to serve up this hot banger titled “Vex“. However, ‘Vex‘ serves as Wande Coal‘s first official single for the year. Although it came late, it is never too late to vibe to King Coal’s sounds.   Production credit goes to Osabuohien Osaretin AKA Sarz is not your mate! Check …