In the past two weeks, two of the world’s biggest progressive metal acts have announced shows in Costa Rica - exciting the country’s fervent metal base. Dream Theater (Aug. 12) and Symphony X (Sept. 6) will both play their first concerts here. Find out what bombastic prog metal is all about by listening to Symphony X’s 20-minute epic “The Divine Wings of Tragedy.” (It gets especially wild at the 10:30 mark).