In randai the kaba is partly sung and partly enacted; in the others it is sung, to the accompaniment of a single instrument...When kaba are sung, the medium is usually rhythmic lines, without rhyme schemes or stanza forms (1994).
The poetic form means that most of the genres drawing on kaba have quite a different feel than those (see Abdullah 1999: 337 for an excerpt from Johns (1958)), like saluang, that draw on the pantun form.