Album: Sabotage (Vertigo,1975) Chart Pos:N/A
The period around Sabbath Bloody Sabbath and Sabotage is what i call their prog era. Sabbath Bloody Sabbath had Rick Wakeman guesting on keyboards while 1975's Sabotage had multi-part song structures and songs clocking close to the ten minute mark. Symptom of the universe is split between a heavy first half and a acoustic second half. In the space of the songs six minutes they manage to help invent prog and thrash metal at the same time, talk about killing two birds with one stone.