Review: Usher and Chris Brown solidify why they are still the torchbearers of modern R&B despite controversy

Usher and Chris Brown are two generational titans from two overlapping eras of R&B and pop music. Seeing them share a stage for “The R&B Tour” (a play on their last names) at a sold-out Soldier Field on Friday felt like seeing the last of a dying breed: male superstars who turn their passionate vulnerability into the highest forms of divine, musical masculinity. The singers delivered a well-orchestrated, collaborative show. They were in sync from the moment Breezy arrived on stage in a stylish…