This page has info for 5 bands named Sound of Silence:
1- Spanish Death / Hardcore
2- Greek progressive/power metal
3- Japanese rockband that is on hiatus since their singer died in a car accident.
4- Melodic Death Metal
5- Indonesian ambient/electronic
1- Sound of Silence is a band from northern-Spain (Asturias) playing an aggressive, dark, melodic and metalic hardcore.Their stuff is original, not the common "death-core" cliche!