metro manila, bustling, sprawling, southeastern asian capital.ted city. ♪ i light a candle put the presents round the tree ♪ >> anthony: but it is christmas. where the mostly catholic population take their holiday season very seriously. because filipinos are, for reasons i have yet to figure out, probably the most giving of all people on the planet. think i'm talking shit? keep watching. ♪ ♪ >> good afternoon everyone. we're the band called keystone. ♪ ♪ >> anthony: ofw stands for overseas filipino worker and they're one of the largest and most important exports, people. go abroad, make money, improve the quality of life for the whole family. all over the world, the philippines sends architects, doctors, construction workers, house keepers, nannies. the entire filipino economy relies heavily on the money sent back by nearly 10 million or 10% of the nation's gdp. until recently, the largest category were musicians like filipino cover bands. they're everywhere. on cruise ships, hotel lobbies, bars and of course in manila, where the competition is f