Tremolo picking involves picking the same note multiple times in a row, usually at least four. This technique originates from classical guitar and other stringed instruments. The idea was to create modulations in volume by finger picking a note multiple times with harder and softer plucking.
In rock and metal Tremolo Picking is more common to use the technique to maintain volume by giving each note less time to decay. It also provides more attack giving a harsher, more aggressive sound.Continue Reading