In the early dawn of Shadowkeep's construction, Noitulove, already a notorious bard of the era, did some serious researching at the stones from which the Great library of Shadowkeep was formed. He found out in his exclusive and ear-destructing experiments that when one plays an instrument from the right distance, volume and pitch - you actually can target the sound into one direction and create a horrible tune which no one can bear without getting his/her/its eardrums disrupted or badly hurting! (power: dexterity)