With stunning vocal power, emotional vitality and stage charisma, these ladies have kept OPM in top-notch form for decades. Embracing the most heartwarming of ballads, Regine Velasquez, Yeng Constantino, Kuh Ledesma and Sitti have re-energised Pinoy rock and lifted sparkling pop, soothing bossa nova and stylish R&B to new levels.