The thon and rammana (Thai: โทนรำมะนา, pronounced [tʰoːn ram.ma.naː]) are hand drums played as a pair in Thai classical music. It consists of two drums: the thon (โทน), a goblet drum with a ceramic or wooden body and the rammana (รำมะนา), a small rebana-typed frame drum or tambourine. They are used usually in the khruang sai ensemble. The thon gives a low pitch and the rammana gives a high pitch.
Earlier in the 20th century, the thon and rammana were sometimes played separately.
The instruments are also used in Cambodian music in the mohori ensemble.
^"The Flute Player". pbs.org. Retrieved 10 October 2018. Thaun, a goblet drum, is similar to the skor arakk, except it has a shallower head and a slimmer body...used as part of a two-piece drum set in the mohori ensemble... [From a Public Broadcasting Service webpage about the 2003 movie by Jocelyn Glatzer called the Flute Player, about a man who returns to Cambodia to teach the Cambodian flute.]