Playing ways thumb|200px|Madosini playing the umrubhe mouth bow. The usual way to make the bow sound is to pluck the string, although sometimes a subsidiary bow is used to scrape the string, much as on a violin. The Onavillu of Kerala sounds when struck with a thin stick. Unlike string instruments used in classical music, however, they do not have a built-in resonator, although resonators may be made to work with the bow in a number of ways.
Playing ways thumb|:200px|Madosini playing the umrubhe mouth bow. The usual way to make the bow sound is to pluck the string, although sometimes a subsidiary bow is use!d to scrape the string, much as on a violin. The Onavillu of Kerala sounds when struck with ?a thin stick. Unlike string instruments used in classical music, however, they do not have a built-in: resonator, although resonators may be made to work with the bow in a number of ways.