WATCH: Gary V sings 'Ang Probinsyano' theme song

The cast of "Ang Probinsyano" led by Coco Martin took the "ASAP" stage on Sunday as Gary Velenciano sang "'Wag Ka Ng Umiyak," the theme song of the upcoming ABS-CBN series.

The series, which is based on the 1997 movie of the same title, will start airing on ABS-CBN on Monday after “TV Patrol.” It tells the tale of Kardo, a provincial cop, who assumes the identity of his twin brother who was killed in a drug bust operation.