Mesfin Fekadu, music writer, New York, for the first interview since Prince’s death with Apollonia Kotero, the Purple One’s former protégé and close friend. Kotero opened up about falling into depression after Prince’s death, and the superstar’s unfulfilled plans to re-launch her career – 30-plus years after she appeared in his “Purple Rain” film and became the lead singer of the group he formed, Apollonia 6.