The instrumentation here is known as piphat mai nuam, or soft-mallet royal ensemble. The song form is known as Thao, a suite-form in which a given melody is performed in an intricate theme-and-variation form. It begins with an extremely slow rhythm (sam chan), doubles that rhythm with a basic melodic statement (song chan), then ends with a variant melody at a very fast tempo (chan dio).
The titles in Thai are in a Word document set in the Angsana font.
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Northern Thai string ensembles
Northern Thai funeral music