Hip-hop and R&B offer some of the most fluid, dynamic sounds today, true barometers for where the culture is at and where it’s going. This week, headlining #OnRepeat—a playlist chock-full of the hottest new songs we can’t seem to stop playing—is Kendrick Lamar’s Luther Vandross-sampling “luther”. This playlist is updated all the time, so if you hear something you like, add it to your library.