In the 2002 concert video Lovers Live, Sade and her band do something amazing. (Please tell me you know who Sade is—she's sold millions of records during a career that spans decades). The concert ends with one of Sade's masterpieces, "Cherish the Day." As the tune comes to a close—and this closure is announced with a slamming hiphop beat—the musicians, one by one, leave the stage, including, finally, Sade. Her African/European beauty vanishes, and all that is left is the beat. It pounds on its own. Sade is perfect. (KeyArena, 305 Harrison St, www.keyarena.com, $49.50–$149.50, all ages)