Apollonia Surprises Fans at 'Purple Rain' Celebration "My Dear Prince, I have never known you to leave the stage so early. 4 long, dreadful months have passed since God welcomed you home," she writes in the letter, using Prince's signature numbers-for . 4. She was the lead singer of Apollonia 6. Apollonia was the lead singer of the band created by Prince in the s. This was after Vanity, lead singer of Vanity 6, left the band for a solo career. Apollonia got the lead role in . Apollonia Kotero starred alongside Prince in the movie Purple Rain Charley Gallay/Getty Images. Prince's rumoured lover and Purple Rain co-star Apollonia Kotero has opened up about the singer's death for the first time.