true, but there are some incredibly varied r&b producers out there too. nineteen85 who produces everything for dvsn and a lot of Drake's stuff has a huge bag of tricks. Jordan Ullman from Majid Jordan can do loads of sounds too.He does have a certain sound. But they all do, right? Neptunes, Timbaland, Dev Hynes, Wyclef, Dallas Austin, Darkchild, all the go to producers in forward thinking R&B of their time had their sound.