Jarring Song

Type of Feat: Class
Prerequisite: Virtuoso Level 4, Perform 14 ranks.
Specifics: A 4th-level virtuoso with at least 14 ranks in Perform can inhibit spellcasting. Anyone attempting to cast a spell during a jarring song must make a Concentration check (DC 15 + the spell level). Success allows the normal completion of the spell; failure means it is lost. A jarring song requires three daily uses of virtuoso performance and is a supernatural, sonic ability.
Use: Selected.