Hungarian piping is characterized by use of the "kontra" to provide rhythmic accompaniment and to vary the drone sound. The melody pipe has a "flea hole", a common feature in Eastern bagpipes: the top hole on the chanter is very small and uncovering it raises the pitch of any other note by approximately a semitone, making the Hungarian pipe largely chromatic over its range (it lacks a major seventh). In some historic examples, the "magyar duda" was tuned with a neutral (i.e., between the major and the minor in pitch) third and sixth and the flea hole was filled in with wax.