The Official Spotify Account For Never Stop Grinding Music Group. NSG spearheaded by upcoming Producer, Composer and Engineer Matthew “Mappy” Wilson. The rising producer has been very consistent and dynamic in his productions showing great promise. The producer has worked with the likes of Valiant, Jafrass, Chronic Law, Prince Swanny , Silk Boss, RajahWild, Demarco, jahmiel, Quada, Bayka, Maestro Don and continues build an extensive catalogue.