Every note of the scale across the first 15 frets. Click a note to hear it.
Minor with a flat second, a half step above the root that grinds against it. The sound of metal, hardcore and digital hardcore riffs.
FF#G#A#CC#D#
Strum one of these (or the random loop in the matching key) and improvise over it with the notes above. Root notes are the safe places to land.