INTERVIEW: Pop Sensation 9 A.M.’s Legacy in the Milwaukee Music Scene  By: Elizabeth Lintonen  Pop Sensation 9 A.M., or PD, was a hyper-pop artist in the Milwaukee community known for her creativity, quirkiness, eccentricity, and passion for her music. Her influence in the Milwaukee music scene was widespread, stretching across genre, as she pushed the boundaries of DIY and self-production.