Black sabbath Gustav holst Mars the planets.

Known as the Tritone.Tony iommi reimagned it from the opening passage from mars from Holst the planets..It was known as the Devil in music in medieval times.The first sample is 38 seconds into the song black sabbath and 9 seconds in to Mars.It was also used by Black sabbath on the Eternal idol tour in 1987 as a soundcheck before the opening Supertzar..Here both are combined at exact same time.

[laslalal]

Thank you Gustav Holst, for helping create heavy metal

[revolt]

I had someone tell me black Sabbath was a blues song just today. I had to laugh.