Usher & Alicia Keys

One of the most successful pop-R&B artists of the late 20th century and the early 21st century, Usher debuted during the mid-'90s as a fresh-faced teenager. As part of the thriving LaFace label roster, he made an instant impact in R&B's post-new jack swing era. He successfully rode mainstream songwriting and production trends across three decades and peaked artistically and commercially during the mid-2000s, when his landmark fourth album, Confessions, outshone all of its competitors. It generated four straight number one pop hits and joined the ranks of Thriller, Whitney Hous...