In the UK, in the early to mid 2000s, I think this was in one of those ads for polyphonic ringtones (I'm not 100% sure, though). It kind of feels like it is innate - it's a song everyone instinctively knows. I think Buddhists (or is it Hindus I'm thinking of?) claim that the 'om' thing came to them instinctively or through meditation or something like that. I think that's where this song came from, too.