I think it depends on what you mean by folk music. I was in Jamaica last year and was blown away by the amount of music which is on all the time everywhere and if it isn't, people sing, loudly and with no inhibitions. Folk music is what pertains to the 'folk' i.e. the people of that culture, I feel, and if I can extrapolate from Jamaica, you won't be able to move for the stuff. Let us know and I hope you have a wonderful time.