Ca tru is Vietnamese chamber music, an esoteric form of expression that is not for everyone, but if you enjoy new musical experiences then give it a go. I personally find the haunting sound of ca tru mesmerizing and uplifting. Ca tru was recognized by UNESCO in 2009 as an Intangible Heritage in need of preserving, so go along and find out why. Performances are just an hour long and take place three evenings each week.