Heulwen Du is the Welsh version Black Sun, this did not appear on Newid and was first released on the Hei Mr DJ Compilation of Welsh artistes album in 1990.

Running length: tbc
Written By: The Alarm
Musicians
Mike Peters – Lead vocals
Dave Sharp – Electric guitar
Eddie Macdonald – Bass guitar
Nigel Twist – Drums, percussion
Mark Taylor – Keyboards

Recorded 7th May 1989 at The Skylight Suite, London, England.
Welsh vocals recorded 13th-15th July 1989.
Mixed at Good Earth Studio, London, England in June/July 1989.
Produced & Engineered by Tony Visconti.