MOST MUSICIANS, when they decide to do a concert residency, head to Las Vegas. In recent years megastars including Adele, Celine Dion and U2 have made tens, if not hundreds, of millions of dollars playing to crowds in Sin City. But not Bad Bunny. On July 11th the Puerto Rican rapper and singer will begin a run of 30 concerts in San Juan, the capital, before setting off on a world tour. It is symbolic of how the musician has become a global hitmaker while keeping one foot on the island. “He is Puerto Rican and he wants you to know it,” says Kacho López Mari, a film-maker who has worked with the musician.