Fans have been eager for more collabs from the rap groups Shoreline Mafia & SOB x RBE since their release of “Da Move.” Of course it’s no surprise that the groups worked on more than one track during their collab & today with their release of “Harden” only proves there’s more hidden in the vault. With production from Ace the Face & BeatBoy, the track contains a serene tone that allows each artist to flow on effortlessly. Listen to the track below!