[Cover] Periphery – Letter Experiment [7th Drop G#] Jan 18, 2017 Cover Drop, Cover Letter Experiment, Cover Periphery, Cover Progressive Metal, Cover Rock, Perfect Absolution, Periphery, zy . Like 0 Thanks! You've already liked this « Ikaw Ang Aking Pangarap – Martin Nievera (Flute Cover) » Elizabeth Elming – „Bluebird“ (Sara Bareilles cover)