|The katho (a.k.a. khamak, khomok, gub-gubi, anand lahari or
gholtong) is a folk instrument found in various places in India. It
is a most unusual instrument with an even more peculiar sound. This
instrument is basically a small drum. however it is penetrated with
a small string or cord that is attached to a handle. This handle is
used to pull the string tight. The string is then plucked while the
force exerted on the handle is used to change the pitch.
It is curious how broadly this instrument is dispersed across India. But there are small differences in construction. In the North-East part of India (i.e., Bengal), the chord is played while it passes through the drum shell; This is known as the khamak or khomok. However in Maharashtra it is played with the cord pulled from the outside; this is known as the katho.