De or het ritme-instrument?

The correct Dutch article is:

het ritme-instrument

Rule Words ending in -ment: usually het. See the rule

How to use ritme-instrument

the ritme-instrumenthet ritme-instrument
this ritme-instrumentdit ritme-instrument
that ritme-instrumentdat ritme-instrument
our ritme-instrumentons ritme-instrument
your ritme-instrumentjouw ritme-instrument
every ritme-instrumentelk ritme-instrument
which ritme-instrument?welk ritme-instrument?
a big ritme-instrument / the big ritme-instrumenteen groot ritme-instrument, het grote ritme-instrument