^Songs for the Spirits: Music and Mediums in Modern Vietnam - Page 83 Barley Norton - 2009 "The basic set of percussion used for chau van consists of the bamboo clappers (phach), a small two-headed barrel drum (trong), and a small cymbal (canh). All of these instruments are placed on the floor and are struck with three wooden ..."
^Possessed by the spirits: mediumship in contemporary Vietnamese ... - Page 27 Karen Fjelstad, Thị Hiền Nguyễn - 2006 "The percussionists might also use bamboo clappers (phach), a small two-headed drum (trong), or a small cymbal (canh). The musicians place the percussion instruments on the floor and strike them with wooden beaters."