Deryn Bwn o'r Banna (The Bittern from the Beacons)

This very short tune includes the sound of the bittern booming and can be sung as a children's song.
It is usually harmonised in a major key, but I've flipped it into the relative minor to give more of the feeling of the beacons echoing to the unearthly sound of a booming bittern ( sadly extinct from this area of course). This version goes through the tune twice and has a little coda which does move to the major.

Listen to the Tune