bVII roman degree
The flat subtonic — a major chord borrowed from the minor/Mixolydian mode, a whole step below the tonic. It gives the classic rock turn and the 'backdoor' approach to I.
Where it lives
10semitones from the tonic
Major mode
major triad
10semitones from the tonic
Minor mode
major triad
Hear it in context: i-bVI-bIII-bVII
Piano sound loads on first tap. Resolved in the key of C — every chord links to its full analysis.