This is a legendary Black Sabbath guitar riff that beginners will find relatively easy. One straightforward approach for the Ironman guitar riff is to work off the scale position, which is B minor, but this is not the best way for it to be played. It will be more practical to use a combination of the B minor and B pentatonic minor scales.
What makes Ironman different from other guitar riffs is that it will be playing two notes, the first and fifth note – in a power chord shape – for each position. You can then pick up these shapes along one string.
Ironman Guitar Riff (lesson):
Watch on Youtube