One day we took the train out to Montserrat and arrived just in time to hear the Montserrat boys choir.  Tip: Later, on our ride to the airport, the taxi driver mentioned that with a group of three, a taxi would cost about the same as the train.  As we had to stand on the crowded train, almost the entire way back, this looked like a much better option.  So, next time taxi to Montserrat.