Opeth songs with only death vocals

Heir Apparent is the only Opeth song to date with absolutely no clean vocals.

Others that people mention either have background clean vocals (like the middle section in Blackwater Park) or very brief moments of clean vocals, but they're still there. Heir is the first.
 
Uhh.. April Ethereal has like one line of clean.. very short. One of my favorites ever ftw. Wreath has some clean vocal ahhs towards the last part. Funeral Portrait has clean vocals as well in there.
 
^ That's whispering, no real singing in circle of the tyrants I would say.
But it's definitely not a opeth song to be honest!