Iron Man by Black Sabbath is played in the key of B at a beginner difficulty level, originally released in the 1970s. It uses 2 chords — B A — arranged in the I-bVII progression.
About the I-bVII progression
This song is built on the I-bVII progression. Follow the chord order in the diagrams above, and use the transpose controls if the key doesn't suit your voice.
Playing in the key of B
B major is a barre-chord key — every primary chord (B, E, F#) requires a barre. Most guitarists play songs in B by capoing up and using easier open shapes from a nearby key.
Related songs
More songs in the key of B
More songs using the I-bVII progression
Learn to play Iron Man by Black Sabbath on guitar. It sits in the key of B and uses the I-bVII progression with the chords B A.